题目内容

液压系统中只要有顺序阀,一定有顺序动作回路。( )

A. 对
B. 错

查看答案
更多问题

集总参数电路代替实际电路的条件是?

A. l《λ
B. l≥λ
C. l=λ
D. l与λ无关

The man __________ for his frankness will make a speech at the meeting.

A. knowing
B. known
C. beingknown
D. having known

There was nothing to prevent her from _______ so.

A. to do
B. doing
C. done
D. being done

He was seen ________out five minutes ago.

A. go
B. to going
C. to go
D. having gone

答案查题题库