每班作业前,都应对()、()、()和安全装置进行检查,如有故障应在()前排除。
参考答案:制动器;吊钩;钢丝绳;操作
What can I do for you, sir?()
A.Can you lend me some money?
B.Nothing.
C.I want a pair of shoes.
D.Whatever