在保护接零系统中,单相三孔插座的工作零线(N)接线孔应与保护零线(PE)接线孔连接在一起。
参考答案:错
--- It’s a shame that you missedthe lecture on the British culture given by Thompson.
--- I _________ it, but I was busy preparing the coming exam.
A.attended
B.had attended
C.would have attended
D.would attend
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