对可更换的低压断路器的灭弧触头,如磨损厚度为原来的()时要考虑更换。
A.1/3
B.1/4
C.1/5
D.1/6
参考答案:A
在一定的时间内,电流通过导体某一横截面的电量越多,电流就______.电流的大小用______表示,简称______.
In “My purpose is to help you feel less stressed .” “to help you feel less stressed” is used as .
A.subject
B.predicative
C.object
D.attributive