安全装置不齐全、不完好、动全不灵敏或有失效者（）；
A、可以吊
B、不吊
C、根据情况
D、起重机安全作业
参考答案：B
—_____ are you from?
—I'm from Changchun. [ ]
A. How
B. Where
C. What
D. How old
--- Seems that Jack is very rich. He is always changing his cars. What is he?
--- ______, but I am not quite sure.
A．Somebody of a manager
B．Something of a manager
C．Anyone of a manager
D．Anything of a manager
