单项选择题

The bearing cap and shell are replaced and tightened up until （）.

A.the “ nip ”is zero
B.the “ nap ” is zero
C.the “ gap ”is correct
D.the “ clearance ” is correct

点击查看答案&解析

上一题目录下一题

单项选择题

A.a closed loop control system
B.an open loop control system
C.a boiler control system
D.a steering gear

单项选择题

A.sliding bowl bottom
B.gravity disc
C.bowl
D.liquid level detector

单项选择题

A.sliding bowl bottom
B.gravity disc
C.separating disc
D.scum valve