SEG group blockchain

1. This is your system's hard disk is broken, or your system files are wrong, you can reload it, or check the system files

2. Yes
all concepts can be viewed in the software of the account opening securities company
generally, you can press "Ctrl" and "R" at the same time.

3.

The service life of general excavator (domestic) is 15 years. Excavator time can be adjusted, but to professional personnel and professional tools

daily maintenance of excavator: the purpose of regular maintenance of excavator is to rece machine failure and prolong machine service life; Rece machine downtime; Improve work efficiency and rece operating costs. As long as the fuel, lubricating oil, water and air are well managed, the fault can be reced by 70%. In fact, about 70% of the failures are caused by poor management

1. fuel management:

   different brands of diesel oil should be selected according to different ambient temperatures (see Table 1 for details); Diesel oil should not be mixed with impurities, lime soil and water, otherwise the fuel pump will be worn prematurely; The content of paraffin and sulfur in inferior fuel is high, which will damage the engine; After daily operation, the fuel tank should be filled with fuel to prevent water droplets on the inner wall of the tank; Open the drain valve at the bottom of the fuel tank to drain water before daily operation; Exhaust the air in the pipeline after the engine runs out of fuel or the filter element is replaced. Minimum ambient temperature 0 ℃ - 10 ℃ - 20 ℃ - 30 ℃ diesel grade 0 # - 10 # - 20 # - 35 #

2. management of other oils:

   other oils include engine oil, hydraulic oil, gear oil, etc; Different brands and grades of oil should not be mixed; Different kinds of excavator oil have different chemical or physical additives in the proction process; It is necessary to ensure that the oil is clean, and to prevent impurities (water, st, particles, etc.) from mixing in; The grade of oil is selected according to the ambient temperature and application. When the ambient temperature is high, the oil with high viscosity should be selected; when the ambient temperature is low, the oil with low viscosity should be selected; The viscosity of gear oil is relatively high to adapt to the larger transmission load, while the viscosity of hydraulic oil is relatively low to rece the flow resistance of liquid

3. management of lubricating grease:

   using lubricating oil (grease) can rece the wear of moving surface and prevent noise. The grease shall not be mixed with st, sand, water and other impurities ring storage; Lithium base grease G2-L1 is recommended, which has good anti-wear performance and is suitable for heavy load conditions; When filling, try to squeeze out all the old oil and wipe it clean to prevent sand adhesion

4. maintenance of filter element:

   the filter element can filter the impurities in the oil circuit or gas circuit, prevent them from invading into the system and causing faults; All kinds of filter elements should be replaced regularly according to the requirements of operation and maintenance manual; When replacing the filter element, check whether there is metal attached to the old filter element. If any metal particles are found, timely diagnose and take improvement measures; Use the pure filter element that meets the requirements of the machine. The filtration capacity of the fake filter element is poor, and the surface and material quality of the filter layer do not meet the requirements, which will seriously affect the normal use of the machine

< / OL >



< H2 > extended data:

contents of regular maintenance:

the fuel filter element and additional fuel filter element should be replaced after the new machine works for 250h; Check the clearance of engine valves

Daily maintenance; Check, clean or replace the air filter element; Clean the inside of cooling system; Check and tighten the bolts of track shoe; Check and adjust the track tension; Check the air inlet heater; Replace the bucket teeth; Adjust the bucket clearance; Check the front window cleaning fluid level; Check and adjust the air conditioner; Clean the floor in the cab; Replace the breaker filter element (optional)

when cleaning the inside of the cooling system, slowly loosen the water injection cap to release the pressure inside the water tank after the engine is fully cooled; Do not clean the engine when the engine is working. High speed rotating fan will cause danger; When cleaning or changing the coolant, park the machine on the level ground; Replace the coolant and corrosion inhibitor according to table 3. The ratio of antifreeze to water shall meet the requirements of Table 4

5. every 100 maintenance items. Boom cylinder head pin shaft; Boom foot pin; Boom cylinder rod end; Pin shaft of stick cylinder head; Connecting pin of boom and stick; Stick end of stick cylinder; Bucket cylinder head pin shaft; Connecting pin of half link; Stick and bucket cylinder rod end; Bucket cylinder head pin shaft; Connecting pin of stick connecting rod; Check the oil level in the rotary mechanism box (add oil); Drain water and sediment from the fuel tank

6. maintenance items every 250h. Check the oil level in the final drive box (add gear oil); Check the battery electrolyte; Replace the oil in the engine oil pan and the engine filter element; Lubrication of slewing bearing (2 places); Check the tension of fan belt, and check the tension of air conditioning compressor belt, and make adjustment

7. maintenance items every 500h. At the same time, every 100 and 250h maintenance items are carried out; Replace the fuel filter element; Check the height of lubricating grease on the rotary pinion (add lubricating grease); Check and clean radiator fins, oil cooler fins and cooler fins; Replace the hydraulic oil filter element; Change the oil in the final drive box (only for the first time in 500h, and once in 1000h later); Clean the air filter elements inside and outside the air conditioner system; Replace the hydraulic oil vent filter element

8. maintenance items every 1000h. At the same time, every 100, 250 and 500h maintenance items are carried out; Change the oil in the rotary mechanism box; Check the oil level of the shock absorber housing (return oil); Check all fasteners of turbocharger; Check the clearance of turbocharger rotor; Check and replace the tension of generator belt; Replace the anti-corrosion filter element; Change the oil in the final drive box

9. maintenance items every 2000h. First complete the maintenance every 100, 250, 500 and 1000 hours; Clean the filter screen of hydraulic oil tank; Clean and check the turbocharger; Check the generator and starting motor; Check the engine valve clearance (and adjust it); Check the shock absorber

10. maintenance for more than 4000H. Increase the inspection of water pump every 4000H; Add the items of changing hydraulic oil every 5000h

11. long term storage. When the machine is stored for a long time, in order to prevent the piston rod of the hydraulic cylinder from rusting, the working device should be placed on the ground; After cleaning and drying, the whole machine is stored in a dry indoor environment; If it can only be stored outdoors, the machine should be parked on the cement floor with good drainage; Before storage, fill up the fuel tank, lubricate all parts, change the hydraulic oil and engine oil,

    apply a thin layer of grease on the exposed metal surface of the piston rod of the hydraulic cylinder, remove the negative terminal of the battery, or remove the battery and store it separately; Add appropriate proportion of antifreeze into the cooling water according to the minimum ambient temperature; Start the engine once a month and operate the machine to lubricate the moving parts and charge the battery at the same time; Turn on the air conditioner and run for 5-10min

4. When the computer system time is "automatically synchronized with the Internet time server", once you click "update now", a prompt will appear: "RPC server is not available". Generally speaking, there are several reasons and solutions for this situation:
1. RPC service is not started
start settings control panel finds management tools services, finds remote Procere call (RPC), double-click to open it, select Auto in startup type, and then click OK; Find "remote process call (RPC) locator", double-click to open it, select "automatic" in "startup type", and then click OK; Finally, after restarting the computer, install the software again according to the correct method to solve the problem
in addition, if your system is XP, before restarting the installation, "start" -- "run", run msconfig and select "normal start", all services will be loaded, including RPC services; Select "start with selection". You must select "load system service" to ensure that the service will be loaded when it starts. If not, continue with the following operation
2. Control panel - management tools - Services - Windows time - start and try again. If not, please continue to operate below
3. The windows time service in the service is not started. You can start it manually in the service
or enter CMD to open the command prompt, and then enter w32tm / register at the command prompt,
if the display is successful, continue to enter net start & quot; windows time"， You can synchronize the time after opening
there are two other solutions to common problems:

first, the synchronization time with the server is wrong
the windows time service is open, but when you click "automatic update", it still displays "windows is wrong when synchronizing with the server". What's the matter

solution:
1. Double click the time in the lower right corner< 2. Change the server to 210.72.145.44 (the server of national time service center of Chinese Academy of Sciences)
3. After modification, you must remember to click "application" in the lower right corner first, and then click "automatic update". Generally, there is no error! Even in the peak period, it will succeed in three times, much better than the servers in the United States<

2. Free choice of time synchronization interval:
the default time synchronization interval of the system is only 7 days, so we can't choose freely, which greatly reces the flexibility of this function. In fact, we can also manually modify its automatic synchronization interval by modifying the registry

1. Enter "regedit" under "start" menu → "run" to enter the registry editor

2. Expand [HKEY]_ LOCAL_ MACHINE\ SYSTEM\ CurrentControlSet\ Services\ W32Time \ TimeProviders\ NtpClient] branch, and double-click the special pollinterval key value to select "base column" in the dialog box to "decimal"
3. The number displayed in the dialog box is the interval of automatic time synchronization (in seconds). For example, the default 604800 is 7 (days) × 24 hours × 60 (points) × If you want XP to automatically set the time in 60 seconds, just calculate the specific number of seconds according to this formula, and then fill it in. For example, I filled in 259200 for three days.

5. Use the command netuse & # 92; IP\ ipc$"& quot;/ user:"& quot; You can simply establish an empty connection with the target (the target needs to open IPC $). For NT, under the default security settings, with the help of empty connection, you can enumerate target users, share, access everyone permissions, access a small part of the registry, and so on, which has no use value. The effect on 2000 is even smaller. Moreover, it is not convenient to implement and needs tools. Note: 1. Only NT / 2000 / XP and above can build IPC $. 2. Make sure your order is typed correctly. The correct command is: netuse & # 92; Target IP & # 92; ipc$" Password & quot/ user:" User name & quot; Be careful not to have too many or too few spaces. When the user name and password do not contain spaces, the double quotation marks around them can be omitted. Empty password with & quot& quot; express.

6. The DHCP in your route may not be turned on. Please check whether the DHCP in your route is turned on
1. Enabling the DHCP client on the computer is the computer's service, which is called the DHCP client relative to the machine. Instead of routing, routing is called DHCP server
2. The DHCP service in the router must be enabled
opening method:
generally input through browser http://192.168.0.1 (it may also be 192.168.1.1). The user name and password are admin, which is the default setting for routers. Find the relevant DHCP item and set the DHCP server to enable or activate. Specific content can refer to the router manual, which is very clear

7. Hello, in view of this problem, it is recommended to re obtain the following steps. Log in to the wechat public platform, click the developer center on the left, as shown in the figure, and write down the appid and appsecret. Under the developer center page, click to enter the online interface debugging tool. Fill in the appid and appsecret, and then click Check questions.

8. 自己写一个servlet继承JSONRPCServlet
然后把session放到threadlocal里
public class AjaxMainServlet extends JSONRPCServlet {

/**
*
*/
private static final long serialVersionUID = -5642301748949443897L;

public AjaxMainServlet(); {
super();;
// TODO Auto-generated constructor stub
}

public void service(HttpServletRequest request, HttpServletResponse response);
throws IOException, ClassCastException {
(new WebStateMachine(););.setRequest(request);;
super.service(request, response);;

}
}
把web.xml里的JSONRPCServlet 修改为你自己的servlet
然后就可以在自己的程序里通过threadloacl来访问session了

9. Nettytransceiver is used by the client. Just by the way< br />
NettyTransceiver() {
channelFactory = null;< br /> connectTimeoutMillis = 0L;< br /> bootstrap = null;< br /> remoteAddr = null;< br /> channelFuture = null;< The above construction method is used to instantiate nettyserver< br />
bootstrap = null， remoteAddr = null; Client information cannot be obtained
the code in my reply above is OK, and it has little effect on the structure
Avro is designed for Hadoop, and its performance is guaranteed, but the development is a little troublesome
in addition, Avro is Apache license 2, which can be changed or used at will. Basically no problem.

10. Meow knife script, which functions can be used