汽轮机盘车额定转速为()rpm。
A、2
B、3
C、4
D、5
参考答案:B
某车间安排甲、乙两人共加工400个零件,甲与乙一起加工了4小时后,又由甲单独加工了6小时才完成任务,已知甲比乙每小时少加工2个零件,求甲、乙两人每小时各加工多少零件?
Sometimes we should roles so that we can understand each other’s difficulties, thus promoting our cooperation.
A.occupy
B.imitate
C.assess
D.switch