触头间的压力越分散,则自动净化作用就越好,接触电阻就越小。
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存款证明一次最多可以开立()个子帐户,每次最多开立()份。
A. 3;10
B. 5;30
C. 10;20
D. 8;10
The switchboards for a-csystems differ from the d-cswitch gear in that the open type panels are generally() and the dead-front switch gear is the common rule.
A. permissibly
B. permissible
C. no permissible
D. not permissible
How()the cargo at loading port?
A. about
B. with
C. on
D. from
可编程序控制器的简称为KMM。
A. 正确
B. 错误