单项选择题
电流互感器的极性是__（）
- A.相对的
B．绝对的
C．随意的
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相关考题
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单项选择题
The examples of the half-squatting, half-kneeling archers in Pit No. 2 are used to illustrate _________ .
A、how vivid the warriors and horses are
B、how impressive the size of the Terracotta Army is
C、what kind of suits people wore at that time
D、how attentive the soldiers were -
单项选择题
电灯的拉线开关就接在__上（）
A.地线
B．零线
C．火线 -
单项选择题
The team leader promised to attend the meeting ____ he arrived at the office.
A、for the time being
B、the moment
C、as much as
D、the day
