当日使用电梯工作完毕后，安全管理员或电梯驾驶员应将电梯轿厢停放在（）位置。
A，底层
B、基站
C、顶层
D、使用层
参考答案：B
句型转换。
1. I cleaned my room yesterday. (就划线部分提问)
________ ________ you ________ yesterday?
2. Jim went to the library last night. (改为一般疑问句)
________ Jim ________ to the library last night?
3. She did her homework last night. (改为否定句)
She ________ ________ her homework last night.
职业以获得现金或实物等报酬为目的。( )
