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【单选题】
某建筑物有四层,每层四个单元,每两个单元为一施工段,该建筑物总砌砖量为3000m 3 ,砌砖工程的产量定额为5 m 3 /d,组织一个15人的工作队,则流水节拍应为( )d。A.
5
B.
10
C.
15
D.
25
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举一反三
【简答题】Questions 31-35 Complete the following sentences using NO MORE THAN TWO WORDS from the text. America's ______ has more than tripled since 1980.
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【简答题】Listen and complete the text:
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