()级以上大风天气应停止上罐操作,若必须上罐时,要系好安全带。
A、三
B、四
C、五
D、六
参考答案:C
—Dad, I don’t think Oliver the right sort of person for the job.
—I see. I’ll go right away and ________.
A.pay him back
B.pay him off
C.put him away
D.put him off
工艺规程的制定工作主要包括准备、工艺过程拟定、()三个阶段。
A.生产计划
B.尺寸设计
C.工序设计
D.制造