上引式仓泵主要由哪些部件构成?
参考答案:
上引式仓泵主要组成部件有:仓罐本体、伞形透气阀、进料阀及其活塞开关、伞形进风阀、止回阀、罐底进风阀、料位计、出料管等。
Two people were killed in the serious car _______ the other day.
A.strike
B.break
C.crash
D.incident
犯意表示