整机调试、试运行工作结束后，电梯即可载客运行。()
参考答案：错
句型转换。
1. I am reading a book. (改为一般疑问句)
______ ______ reading a book?
2. Catherine is eating dinner. (改为否定句)
Catherine ______ ______ dinner.
3. Kate is playing the guitar. (对划线部分提问)
______ ______ Kate ______?
4. Jim is playing basketball now. (对划线部分提问)
______ is Jim ______?
5. Maria is writing to her pen pal. (对划线部分提问)
______ ______ Maria writing to?
指数平滑法
