题目:
He painted his bedroom black. It looks dark and dreary. He should choose a different color.
A.had to choose
B.should have chosen
C.must have chosen
D.could have been choosing
答案:
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参考答案:A, B, D, E解析:在《建设工程安全生产管理条例》(国务院第393号令)中规定:对下列达到一定规模的危险性较大的分部(分项)工程编制专项施工方案,并附具安全验算结果,经施工单位技术负责人、总...