配电线路重复接地的目的是什么？
参考答案：
1.当电气设备发生接地时，可降低零线的对地电压；
2.当零线断线时，可继续保持接地状态，减轻触电的危害。
As we all know, the film Go Lala Go[《杜拉拉升职记》]is ________from a famous novel written by Li Ke.
A．adopted
B．adjusted
C．adapted
D．absorbed
To determine if a C02 fire extinguisher is fully charged, you would（）.
A.operate the trigger valve
B.weigh the extinguisher
C.test with a pressure gauge
D.read the date of last test
