没有制造厂铭牌的各种起重机具，（）后，方准使用。
A.查算及荷重试验
B.工作负责人许可
C.工作负责人检查
D.填写工作票
参考答案：A
He felt cheap about rushing to get in line before the old lady carrying heavy parcels.
A．felt inferior and ashamed
B．felt not worthwhile of doing something
C．felt bad about doing something
D．felt unhappy about doing something
国家性质
