基槽开挖后,必须经()最后检查签证,方可隐蔽。
A.业主代表
B.施工单位负责人
C.监理工程师
D.质量监督站监督员
参考答案:C
某学生在量取液体时,俯视刻度进行读数,读得体积为36mL,则他所量的液体的实际( )
A.大于36mL
B.小于36mL
C.等于36mL
D.都有可能
—Why is the classroom so dirty?
—Sorry , sir. It ____ yesterday. We forgot to do it.[ ]
A. doesn't clean
B. didn't clean
C. isn't cleaned
D. wasn't cleaned