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【单选题】
等截面直杆在两个外力的作用下发生压缩变形时,这对外具备的特点一定是()A.
反向、共线
B.
反向、过截面形心
C.
方向相反、作用线与杆轴线重合
D.
方向相同、作用线与轴线重合
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反馈参考答案：
举一反三
【单选题】_________ our order of June 17 we will keep you well advised of the relative development:
A.
With reference to
B.
Regards to
C.
Regards on
D.
With reference on
【简答题】Ladies and Gentlemen: This is purser 1 . Due to the mechanical problem we will 2 for take-off. Our maintenance 3 are troubleshooting. Please remain 4 and we will keep you 5 any update. During this per...
【简答题】C/S 的全称是 (用英文描述) B/S 的全称是 (用英文描述)
【简答题】Complete the sentences with the correct expressions of the following given words: assure You may ____that we will keep you informed of the execution of your order. We can ____you ____the best quality ...
【简答题】C/S的全称是:
【单选题】_____ our order of June 17, we will keep you well informed of the relative development.
A.
With reference to
B.
Regards to
C.
Regards on
D.
With reference on
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