不带EGC功能的C船站称().
A.0级站
B.一级站
C.二级站
D.三级站
参考答案:B
When I was younger, I’d often go for _____ drive with some friends, purely for _____ enjoyment of it.
A.a; an
B.a; the
C.the; /
D./; the
局部接地极可以临259、电动机断相不会引起设备过负荷。()