负荷调节管路是指从储气罐到( )处减荷阀的一段管路。
A.控制阀
B.压缩机入口
C.汽缸
D.过滤器
参考答案:B
— I'm afraid I can't finish the work within the deadline.
— _____. I'll give you a hand. [ ]
A. Don't be afraid
B. Take it easy
C. Not at all
D. No problem
排气门在下止点以前就开启的曲轴转角称为()。
A、进气提前角
B、排气提前角
C、进气迟后角
D、排气迟后角