Fil miner minimum 128
Publish: 2021-04-04 11:39:47
1. Professional, high income, good security, low price, understand the interstellar cloud.
2. The cost performance is good. The interstellar cloud is OK in the market.
3.
bus line: metro line 15 → Yuntong line 110, the whole journey is about 43.8km
1. Take Metro Line 15 from Nanfaxin, pass 14 stations, and reach Liukou station
2. Walk about 240m to Liukou station
3. Take Yuntong line 110, pass 14 stations, and reach Beiwa Road Station
4. Walk about 710m, Get to the Medical Examination Center Affiliated Hospital of Air Force Institute of Aeronautical medicine
bus line: metro line 15 → route 632, the whole journey is about 45.3km
1. Take Metro Line 15 from Nanfaxin, pass 14 stops, and reach Liukou station
2. Walk about 440m to jingshuyuan station
3. Take route 632, pass 11 stops, and reach Beiwa Road Station
< P > 4 Walk about 770 meters to the medical examination center, Affiliated Hospital of Air Force Institute of Aeronautical medicine4. Hello:
1. A bucket of water can be filled with 10 or 12 cups of water. Pour 5 cups of water and 3 bowls of water into the empty bucket. How much is the height of water surface in the bucket
bowl 1 / 10, cup 1 / 12, 1 / 12 * 5 + 1 / 10 * 3 = answer
2. To complete a project alone, it will take 20 days for Party A and 30 days for Party B. Party A will do it alone for 5 days, and Party B will take part in the work. How many days will it take to complete the task< (1-1 / 20 * 5) / (1 / 20 + 1 / 30) = answer
3. The number of students in a foreign language group accounts for 3 / 7 of the total number of students in the class, the number of students in a mathematics group accounts for 1 / 6 of the total number of students in the class, and the number of students in at least one group of foreign language and mathematics accounts for 11 / 21 of the total number of students in the class
3 / 7 + 1 / 6-11 / 21 = 18 / 42 + 7 / 42-22 / 42 = 3 / 42 = 1 / 14
the number of participants in both groups accounts for 1 / 14 of the total number of students in the class
4. There are 480 movie tickets. If the tickets are given to the fifth grade students first, the rest can only be given to half of the sixth grade students. If the tickets are given to the sixth grade students, the rest to the fifth grade students and the rest to the fifth grade students, then one third of the fifth grade students will not get the tickets. 5、 How many students are there in grade six< There are X students in grade five and 2 (480-x) students in grade six< There are 2 (480-x) students in Grade 6, grade 5 [480-2 (480-x)] divided by two-thirds
x + 2 (480-x) = 2 (480-x) + [480-2 (480-x)] divided by two-thirds
x = 360......
grade 5
2 (480-x) = 2 * (480-360) = 2 * 120 = 240......
5. It takes 3 minutes for a and 3.5 minutes for B to process the same parts, C: it will take four minutes. Now there are 1825 such parts, and the three of them process the parts at the same time
a efficiency of 1 / 3, B efficiency of 1 / 3.5 = 2 / 7, C efficiency of 1 / 4
a efficiency of 1825 * 1 / 3 = 1825 / 3,
b efficiency of 1825 * 2 / 7 = 3650 / 7
C efficiency of 1825 * 1 / 4 = 1825 / 4
this batch of parts 1 / (1 / 3 + 2 / 7 + 1 / 4) = 84 / 73 hours
a 84 / 73 * 1825 / 3 = answer
b efficiency of 84 / 73 * 3650 / 7 = answer
C efficiency of 84 / 73 * 1825 / 4 = answer
6 A project can be completed by Party A in 63 days and then by Party B in 28 days. If Party A and Party B cooperate, it will take 48 days to complete. Now it's going to take 42 days for a, and then it's going to take B. how many more days
63 A + 28 B = 48 (a + b) 3A = 4 B a daily workload of 1-92; In a village, m ha of corn was planted, and the total yield was n kg; The planting area of rice is p ha more than that of corn; The total yield of rice is more than twice that of corn. Write the formula for the yield per unit area of corn and rice. If the denominators of the two expressions are different, divide them together
corn: the total yield is n kg, m ha,
then: n / M kg per ha.
rice: the total yield is more than 2 times of corn, Q kg, that is, 2n + Q kg
the planting area is p ha more than that of corn, which is m + P kg
then: 2n + Q / M + P kg per hectare
n / M kg per hectare for corn, 2n + Q / M + P kg per hectare for rice, and then divide into two parts
n (M + P) / M (M + P) kg per hectare for corn,
m (2n + Q) / M (M + P) kg per hectare for rice
9, How much is the scholarship for each of them
Zhang San's number of winners * 2 / 9 = Li Si's number of winners * 1 / 4
it can be set as follows:
Zhang San's number of winners = 1 / 4
Li Si's number of winners = 2 / 9
then:
Zhang San's number of winners * 2 / 9 = Li Si's number of winners * 1 / 4
1 / 4 * 2 / 9 = 2 / 9 * 1 / 4
the ratio of Zhang San's number of winners to Li Si's number of winners is 1 / 4:2 / 9 = 9:8
then it is distributed in proportion,
170 * 9 / 9 + 8 = 90 yuan, Zhang San won the prize
170 * 8 / 9 + 8 = 80 yuan, Li Si won the prize
10
let an X and a Y
greatest common divisor 4,
least common multiple:
4 | x y
| -
A B
least common multiple = 4 * a * b = 120
A * b = 30, AB is reciprocal, so a = 2, B = 15
x = 2 * 4 = 8, y = 15 * 4 = 60
so, these two numbers are 8 and 60.
11. In the model airplane competition, the ratio of people divided into group A and group B is 7:8. If eight people are transferred from group B to group A, the number of people in group B is four fifths of that in group A. how many people are there in total< A bucket of salt water weighs 200 kg and the salt content is 10%. How many kg of water should be evaporated to make the salt content reach 16%
the weight of salt is the same, the salt is: 200 * 10% = 20kg
when the salt content is 16%, the total amount is: 20 / 16% = 125kg
then evaporate water: 200-125 = 75kg
13. A bottle of drink, after drinking 25%, weighs 950g. When drinking 50%, weighs 700g, how many kg are the drinks and bottles
drink water: 50% - 25% = 25% weight: 950-700 = 250g
total weight of water: 250 / 25% = 1000g = 1kg
bottle weight: 950-1000 * 75% = 200g = 0. 2kg
14. There are two scoring methods for a certain mathematics competition: the first is to get 5 points for answering a right question, 2 points for not answering, and no points for wrong answers; In the second way, 40 points will be given first, 3 points will be given if the answer is right, 1 point will be dected if the answer is wrong, and 81 points will be given to a student in both ways. How many questions are there in this competition
answer question x correctly and question y not correctly, Wrong answer to Z
5x + 2Y = 81
40 + 3x-z = 81 leads to 3x-z = 41
from 5x + 2Y = 81, we can see that x must be singular
from 3x-z = 41, we can see that 41 + Z must be divided by 3
when z = 1, x = 14, y = 3
when z = 4, x = 15, y = 3
when z = 7, x = 16, y = - 2, y = - 2 The project team needs to build a canal: if it needs to build 8 meters more every day, it can be completed 4 days in advance; If the construction is less than 8 meters per day, the completion will be delayed by 4 days. What is the length of this canal<
suppose the specified time is x days
according to the meaning of the question, the workload of 4 days is 8 [x-4], then it can be repaired in one day: 2 [x-4]
[2 (x-4) - 8] [x + 8] = x * 2 [x-4]
[2x-16] [x + 8] = 2x ^ 2-8x
2x ^ 2 + 16x-128 = 2x ^ 2-8x
8x = 128
x = 16
that is, the specified time is 16 days, It can be repaired in one day: 2 * [16-4] = 24
so the total length is: 16 * 24 = 384m
16. What is the minimum number when a number is divided by 3 to 1, by 4 to 2, and by 5 to 4
the three numbers 3, 4 and 5 in the question are reciprocal
then [4,5] = 20; [ 3，5〕=15〔 3，4〕=12〔 3，4，5〕=60
in order to divide 20 by 3 to 1, use 20 × 2=40
make 15 be divided by 4 to make 1, use 15 × 3=45
make 12 be divided by 5 to make 1, use 12 × 3=36
then, 40 × 1＋45 × 2＋36 × 4 = 274,
because, 274 & gt; 60, so 274-60 × 4 = 34 is the number
17. A number is divided by 3 to 2, by 7 to 4, and by 8 to 5. What is the minimum number
the three numbers in question 3, 7 and 8 are reciprocal
then [7,8] = 56; [ 3，8〕=24〔 3，7〕=21〔 3，7，8〕=168
in order to divide 56 into 3 and 1, 56 is used × 2=112
make 24 be divided by 7, and 1 is left, then 24 is used × 5=120
make 21 be divided by 8, and 1 is left by 21 × 5=105
then, 112 × 2＋120 × 4＋105 × 5 = 1229,
because, 1229 & gt; 168, so, 1229-168 × 7 = 53, that's the number
18. A number divided by 5 to 4, divided by 8 to 3, divided by 11 to 2, to find the minimum natural number satisfying the condition
the numbers 5, 8 and 11 in the question are reciprocal
then [8,11] = 88; [ 5，11〕=55〔 5，8〕=40〔 5，8，11〕=440
in order to divide 88 by 5 to 1, 88 is used × 2=176
divide 55 by 8, and then divide 1 by 55 × 7=385
make 40 be divided by 11, and the remaining one is divided by 40 × 8=320
then, 176 × 4＋385 × 3＋320 × 2 = 2499,
because 2499 & gt; 440, so 2499-440 × 5 = 299, that's the number
19. There are six students in a row for every nine students, two students in a row for every seven students, and three students in a row for every five students. How many students are there at least in this grade Teacher Zelin's question)
in the question, the numbers 9, 7 and 5 are reciprocal
then [7,5] = 35; [ 9，5〕=45〔 9，7〕=63〔 9，7，5〕=315
in order to divide 35 by 9 and 1, 35 is used × 8=280
make 45 be divided by 7 and 1, use 45 × 5=225
make 63 be divided by 5 and 1, then use 63 × 2=126
then, 280 × 6＋225 × 2＋126 × 3 = 2508,
because, 2508 & gt; 315, so 2508-315 × 7 = 303, that's the number
20. There are five students in a row of nine, one in a row of seven and two in a row of five. How many students are there in this grade Happiness 123 teacher asked the question)
in the question, 9, 7 and 5 are reciprocal
then [7,5] = 35; [ 9，5〕=45〔 9，7〕=63〔 9，7，5〕=315
in order to divide 35 by 9 and 1, 35 is used × 8=280
make 45 be divided by 7 and 1, use 45 × 5=225
make 63 be divided by 5 and 1, then use 63 × 2=126
then, 280 × 5＋225 × 1＋126 × 2 = 1877,
because 1877 & gt; 315, so 1877-315 × 5 = 302, that's the number
the story of a scientist
Boyle, a skeptical chemist, was born in an aristocratic family in Ireland on January 25, 1627. His father was a count and his family was rich. He is the youngest of fourteen brothers. Boyle was not very smart when he was a child. He stuttered and didn't like lively games, but he was very studious and liked to read and think quietly. From 1639 to 1644, he traveled to Europe. During this period, he read a lot of natural science books, including the famous book dialogue about two world systems by Galileo, an astronomer and physicist. The book left a deep impression on him. His later famous work skeptic chemist imitated this book
e to the chaos of war, the death of his father and the decline of his family, he came back to live in London with his sister in 1644. He began to study medicine and agriculture there. He came into contact with a lot of chemical knowledge and experiments, and soon became a well-trained chemical experimenter and a creative theorist. During this period, he, together with many scholars, organized a scientific society to hold weekly seminars, mainly discussing the latest development of natural science and the problems encountered in the laboratory. Boyle called the organization "invisible University.". This society is the predecessor of the famous "Royal Society" whose purpose is to promote the development of natural science. Boyle is an important member of the society. As the branch of the society was located in Oxford, Boyle moved to Oxford in 1654. In Oxford, he established a well-equipped laboratory and employed some talented scholars as assistants to lead them in various scientific researches. Many of his scientific research achievements were made here. That epoch-making masterpiece
1. A bucket of water can be filled with 10 or 12 cups of water. Pour 5 cups of water and 3 bowls of water into the empty bucket. How much is the height of water surface in the bucket
bowl 1 / 10, cup 1 / 12, 1 / 12 * 5 + 1 / 10 * 3 = answer
2. To complete a project alone, it will take 20 days for Party A and 30 days for Party B. Party A will do it alone for 5 days, and Party B will take part in the work. How many days will it take to complete the task< (1-1 / 20 * 5) / (1 / 20 + 1 / 30) = answer
3. The number of students in a foreign language group accounts for 3 / 7 of the total number of students in the class, the number of students in a mathematics group accounts for 1 / 6 of the total number of students in the class, and the number of students in at least one group of foreign language and mathematics accounts for 11 / 21 of the total number of students in the class
3 / 7 + 1 / 6-11 / 21 = 18 / 42 + 7 / 42-22 / 42 = 3 / 42 = 1 / 14
the number of participants in both groups accounts for 1 / 14 of the total number of students in the class
4. There are 480 movie tickets. If the tickets are given to the fifth grade students first, the rest can only be given to half of the sixth grade students. If the tickets are given to the sixth grade students, the rest to the fifth grade students and the rest to the fifth grade students, then one third of the fifth grade students will not get the tickets. 5、 How many students are there in grade six< There are X students in grade five and 2 (480-x) students in grade six< There are 2 (480-x) students in Grade 6, grade 5 [480-2 (480-x)] divided by two-thirds
x + 2 (480-x) = 2 (480-x) + [480-2 (480-x)] divided by two-thirds
x = 360......
grade 5
2 (480-x) = 2 * (480-360) = 2 * 120 = 240......
5. It takes 3 minutes for a and 3.5 minutes for B to process the same parts, C: it will take four minutes. Now there are 1825 such parts, and the three of them process the parts at the same time
a efficiency of 1 / 3, B efficiency of 1 / 3.5 = 2 / 7, C efficiency of 1 / 4
a efficiency of 1825 * 1 / 3 = 1825 / 3,
b efficiency of 1825 * 2 / 7 = 3650 / 7
C efficiency of 1825 * 1 / 4 = 1825 / 4
this batch of parts 1 / (1 / 3 + 2 / 7 + 1 / 4) = 84 / 73 hours
a 84 / 73 * 1825 / 3 = answer
b efficiency of 84 / 73 * 3650 / 7 = answer
C efficiency of 84 / 73 * 1825 / 4 = answer
6 A project can be completed by Party A in 63 days and then by Party B in 28 days. If Party A and Party B cooperate, it will take 48 days to complete. Now it's going to take 42 days for a, and then it's going to take B. how many more days
63 A + 28 B = 48 (a + b) 3A = 4 B a daily workload of 1-92; In a village, m ha of corn was planted, and the total yield was n kg; The planting area of rice is p ha more than that of corn; The total yield of rice is more than twice that of corn. Write the formula for the yield per unit area of corn and rice. If the denominators of the two expressions are different, divide them together
corn: the total yield is n kg, m ha,
then: n / M kg per ha.
rice: the total yield is more than 2 times of corn, Q kg, that is, 2n + Q kg
the planting area is p ha more than that of corn, which is m + P kg
then: 2n + Q / M + P kg per hectare
n / M kg per hectare for corn, 2n + Q / M + P kg per hectare for rice, and then divide into two parts
n (M + P) / M (M + P) kg per hectare for corn,
m (2n + Q) / M (M + P) kg per hectare for rice
9, How much is the scholarship for each of them
Zhang San's number of winners * 2 / 9 = Li Si's number of winners * 1 / 4
it can be set as follows:
Zhang San's number of winners = 1 / 4
Li Si's number of winners = 2 / 9
then:
Zhang San's number of winners * 2 / 9 = Li Si's number of winners * 1 / 4
1 / 4 * 2 / 9 = 2 / 9 * 1 / 4
the ratio of Zhang San's number of winners to Li Si's number of winners is 1 / 4:2 / 9 = 9:8
then it is distributed in proportion,
170 * 9 / 9 + 8 = 90 yuan, Zhang San won the prize
170 * 8 / 9 + 8 = 80 yuan, Li Si won the prize
10
let an X and a Y
greatest common divisor 4,
least common multiple:
4 | x y
| -
A B
least common multiple = 4 * a * b = 120
A * b = 30, AB is reciprocal, so a = 2, B = 15
x = 2 * 4 = 8, y = 15 * 4 = 60
so, these two numbers are 8 and 60.
11. In the model airplane competition, the ratio of people divided into group A and group B is 7:8. If eight people are transferred from group B to group A, the number of people in group B is four fifths of that in group A. how many people are there in total< A bucket of salt water weighs 200 kg and the salt content is 10%. How many kg of water should be evaporated to make the salt content reach 16%
the weight of salt is the same, the salt is: 200 * 10% = 20kg
when the salt content is 16%, the total amount is: 20 / 16% = 125kg
then evaporate water: 200-125 = 75kg
13. A bottle of drink, after drinking 25%, weighs 950g. When drinking 50%, weighs 700g, how many kg are the drinks and bottles
drink water: 50% - 25% = 25% weight: 950-700 = 250g
total weight of water: 250 / 25% = 1000g = 1kg
bottle weight: 950-1000 * 75% = 200g = 0. 2kg
14. There are two scoring methods for a certain mathematics competition: the first is to get 5 points for answering a right question, 2 points for not answering, and no points for wrong answers; In the second way, 40 points will be given first, 3 points will be given if the answer is right, 1 point will be dected if the answer is wrong, and 81 points will be given to a student in both ways. How many questions are there in this competition
answer question x correctly and question y not correctly, Wrong answer to Z
5x + 2Y = 81
40 + 3x-z = 81 leads to 3x-z = 41
from 5x + 2Y = 81, we can see that x must be singular
from 3x-z = 41, we can see that 41 + Z must be divided by 3
when z = 1, x = 14, y = 3
when z = 4, x = 15, y = 3
when z = 7, x = 16, y = - 2, y = - 2 The project team needs to build a canal: if it needs to build 8 meters more every day, it can be completed 4 days in advance; If the construction is less than 8 meters per day, the completion will be delayed by 4 days. What is the length of this canal<
suppose the specified time is x days
according to the meaning of the question, the workload of 4 days is 8 [x-4], then it can be repaired in one day: 2 [x-4]
[2 (x-4) - 8] [x + 8] = x * 2 [x-4]
[2x-16] [x + 8] = 2x ^ 2-8x
2x ^ 2 + 16x-128 = 2x ^ 2-8x
8x = 128
x = 16
that is, the specified time is 16 days, It can be repaired in one day: 2 * [16-4] = 24
so the total length is: 16 * 24 = 384m
16. What is the minimum number when a number is divided by 3 to 1, by 4 to 2, and by 5 to 4
the three numbers 3, 4 and 5 in the question are reciprocal
then [4,5] = 20; [ 3，5〕=15〔 3，4〕=12〔 3，4，5〕=60
in order to divide 20 by 3 to 1, use 20 × 2=40
make 15 be divided by 4 to make 1, use 15 × 3=45
make 12 be divided by 5 to make 1, use 12 × 3=36
then, 40 × 1＋45 × 2＋36 × 4 = 274,
because, 274 & gt; 60, so 274-60 × 4 = 34 is the number
17. A number is divided by 3 to 2, by 7 to 4, and by 8 to 5. What is the minimum number
the three numbers in question 3, 7 and 8 are reciprocal
then [7,8] = 56; [ 3，8〕=24〔 3，7〕=21〔 3，7，8〕=168
in order to divide 56 into 3 and 1, 56 is used × 2=112
make 24 be divided by 7, and 1 is left, then 24 is used × 5=120
make 21 be divided by 8, and 1 is left by 21 × 5=105
then, 112 × 2＋120 × 4＋105 × 5 = 1229,
because, 1229 & gt; 168, so, 1229-168 × 7 = 53, that's the number
18. A number divided by 5 to 4, divided by 8 to 3, divided by 11 to 2, to find the minimum natural number satisfying the condition
the numbers 5, 8 and 11 in the question are reciprocal
then [8,11] = 88; [ 5，11〕=55〔 5，8〕=40〔 5，8，11〕=440
in order to divide 88 by 5 to 1, 88 is used × 2=176
divide 55 by 8, and then divide 1 by 55 × 7=385
make 40 be divided by 11, and the remaining one is divided by 40 × 8=320
then, 176 × 4＋385 × 3＋320 × 2 = 2499,
because 2499 & gt; 440, so 2499-440 × 5 = 299, that's the number
19. There are six students in a row for every nine students, two students in a row for every seven students, and three students in a row for every five students. How many students are there at least in this grade Teacher Zelin's question)
in the question, the numbers 9, 7 and 5 are reciprocal
then [7,5] = 35; [ 9，5〕=45〔 9，7〕=63〔 9，7，5〕=315
in order to divide 35 by 9 and 1, 35 is used × 8=280
make 45 be divided by 7 and 1, use 45 × 5=225
make 63 be divided by 5 and 1, then use 63 × 2=126
then, 280 × 6＋225 × 2＋126 × 3 = 2508,
because, 2508 & gt; 315, so 2508-315 × 7 = 303, that's the number
20. There are five students in a row of nine, one in a row of seven and two in a row of five. How many students are there in this grade Happiness 123 teacher asked the question)
in the question, 9, 7 and 5 are reciprocal
then [7,5] = 35; [ 9，5〕=45〔 9，7〕=63〔 9，7，5〕=315
in order to divide 35 by 9 and 1, 35 is used × 8=280
make 45 be divided by 7 and 1, use 45 × 5=225
make 63 be divided by 5 and 1, then use 63 × 2=126
then, 280 × 5＋225 × 1＋126 × 2 = 1877,
because 1877 & gt; 315, so 1877-315 × 5 = 302, that's the number
the story of a scientist
Boyle, a skeptical chemist, was born in an aristocratic family in Ireland on January 25, 1627. His father was a count and his family was rich. He is the youngest of fourteen brothers. Boyle was not very smart when he was a child. He stuttered and didn't like lively games, but he was very studious and liked to read and think quietly. From 1639 to 1644, he traveled to Europe. During this period, he read a lot of natural science books, including the famous book dialogue about two world systems by Galileo, an astronomer and physicist. The book left a deep impression on him. His later famous work skeptic chemist imitated this book
e to the chaos of war, the death of his father and the decline of his family, he came back to live in London with his sister in 1644. He began to study medicine and agriculture there. He came into contact with a lot of chemical knowledge and experiments, and soon became a well-trained chemical experimenter and a creative theorist. During this period, he, together with many scholars, organized a scientific society to hold weekly seminars, mainly discussing the latest development of natural science and the problems encountered in the laboratory. Boyle called the organization "invisible University.". This society is the predecessor of the famous "Royal Society" whose purpose is to promote the development of natural science. Boyle is an important member of the society. As the branch of the society was located in Oxford, Boyle moved to Oxford in 1654. In Oxford, he established a well-equipped laboratory and employed some talented scholars as assistants to lead them in various scientific researches. Many of his scientific research achievements were made here. That epoch-making masterpiece
5. Safe and reliable, low-cost understanding of the interstellar cloud.
6. There are too many IPFs mining machinery companies, and a variety of conceptual packaging also mislead investors and miss the best investment opportunity. You can learn about the interstellar cloud, and avoid detours.
7. It's reasonable. The cost performance is fairly good. It's the interstellar cloud. You can learn more about it.
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