某母线装设有完全差动保护,在外部故障时,各健全线路电流方向是()母线的,故障线路的方向是()母线的,其大小()各健全线路电流之和(忽略负荷电流)
参考答案:指向;背离;等于
区域巡逻常见方法有哪些?
I'll bring some medicine just some of us get sick while travelling.
A.As if
B.in case
C.even though
D.as long as