______,I'd have told you.
A. If I would have known it
B. If I had have known it
C. Had I known it
D. should I know it
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If I had had enough time,I ______ my work.
A. would finish
B. must have finish
C. would have finished
D. had finished
( )是液压系统的储能元件,它能储存液体压力能,并在需要的时候释放出来供给液压系统。
A. 油箱
B. 过滤器
C. 蓄能器
D. 压力表
()主要是用来储存油液的。
A. 油箱
B. 过滤器
C. 压力表
D. 冷却器
减压回路是属于( )
A. 压力控制回路
B. 速度控制回路
C. 顺序动作回路
D. 节能回路