According to Marina, a woman wishing to be a general builder
A. must be specially trained
B. should be strong enough
C. can learn her job either from others or by experience
D. must get used to doing a different sort or work
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高压电机测定完绝缘电阻后应进行放电，而且只能在电动机断电的情况下才能测量其绝缘电阻。（）
A. 对
B. 错
一般培训计划应定时间、定地点、定内容、定要求、有联系、有考核。（）
A. 对
B. 错
指导者在讲解各项操作时，还应详细讲解安全操作规程及现场事故处理的有关规定，使学员牢固掌握( )的相关知识。
A. 安全生产
B. 文明生产
C. 现场生产
D. 计划生产
By the end of last year we ______ ever 2,000 English phrases.
A. have learned
B. learned
C. will have learned
D. had learned
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