在走线过程中,电缆走线要美观,也可以从母线相间穿过。
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Either you or the headmaster()the prizes to those gifted students at the meeting
A. is handing out
B. are to hand out
C. are handing out
D. is to hand out
按GB7588-2003《电梯制造与安装安全规范》规定,钢丝绳与其端接装置的接合处,至少应能承受钢丝绳最小破断负荷的()。
A. 70%
B. 80%
C. 85%