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【单选题】
某工程划分为 A、B、C、D、E五个施工过程,划分为六个施工段,流水节拍分别为 t A = 3d, t B = 5d, t C = 3d, t D = 4d, t E = 2d。 【问题】 计算出流水施工的总工期。A.
35
B.
47
C.
57
D.
42
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举一反三
【简答题】He certainly tried to explain his ideas but I am still at a loss ________ his points. A. seeing B. to se C. for seeing D. and see
【简答题】如图所示,这是PS工具箱中的( ),它是一个工具组,包括( )个隐藏工具。使用这个工具可以创建矩形选区、( )选区或者单行或单列选区,还可以用来选中图像的一部分。
【单选题】According to this passage, which of the following is true?
A.
The Negroes came to North America in order to work for the earliest immigrants.
B.
The Negroes also belonged to the earliest immigrants to the North America．
C.
The Negroes were brought to America by chance.
D.
The Negroes didn't win freedom until now.
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