井口提升信号必须与绞车控制回路闭锁。只有井口发出开车信号，提升机才能启动。
参考答案：对
-Tom had a good time at the party.
-________,and ________.[ ]
A．So he had；so did I
B．So had he；so I did
C．So he did；so did I
D．So did he；so I did
Sometimes we may force people to do things, and that is also a kind of leadership.
