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单项选择题
建设单位每年组织（）对总承包单位工程物资抽检，抽检结果纳入总承包服务商年度考核
A.一次
B．两次
C．三次
D．四次
B．两次
C．三次
D．四次
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问答题
Please complete the summary of the text. Civil engineering has a long history, ___________ back to the ancient times when human beings lacked the __________ equipment for their construction.Civil engineering is not only about designing and construction, but also about __________ and __________ the infrastructure.
Please complete the summary of the text. Civil engineering has a long history, ___________ back to the ancient times when human beings lacked the __________ equipment for their construction.Civil engineering is not only about designing and construction, but also about __________ and __________ the infrastructure.
A.Civil
答案：
Civil engineering has a long history, tracing back to the an...
