长江入海口在我国哪个城市?
参考答案:
长江入海口在上海
Henry _____ be at home now because he phoned me from the factory just now.
A.mustn’t
B.isn’t able to
C.may not
D.can’t
PSA液压油系统在联锁投用的情况下,联锁的内容有()
A、压力倒泵
B、温度倒泵
C、液位倒泵
D、联锁停车