Mining machinery alliance power supply

1. Is it one of the following games, StarCraft, red alert, Warcraft, Empire

2. Superposition principle: when each independent power source acts on the circuit separately, other power sources must be set to zero, that is, voltage source short circuit (output voltage is zero), current source open circuit (output current is zero)

4. Shenzhen Fengtai
there is no such advertisement. What a mess.

5. Don't ask. Your family is the best

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8. The old brand is good, the sales service is also up to standard