在成套配电装置柜体安装时,相互间接缝应( )。
A.不大于2mm
B.不小于2mm
C.不大于5mm
D.不小于5mm
参考答案:A
工程中将钢材于常温下进行冷拉使之产生塑性变形,从而提高钢材屈服强度,这个过程称为冷拉强化。( )
— ________ is it from your home to the factory?
— It's only 2 miles.[ ]
A. How long
B. How far
C. How about
D. How often