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【简答题】
图示结构,试件AB、CB的应力? 已知F=20KN;斜杆AB为直径20mm的圆截面杆,水平杆CB为15mm×15mm的方截面杆。
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反馈参考答案：
举一反三
【简答题】Among the following, only one is not a representative feature of O Henry’s short stories. It is _________. A. conversational opening B.improbable coincidence C.Surprise ending D.multiple points of vie...
【单选题】The evening news comes on at seven o'clock and ______ only thirty minutes.
A.
keeps
B.
continues
C.
finishes
D.
lasts
【单选题】______make good progress.
A.
Only by working hard they can
B.
By only working hard they can
C.
Only by working hard can they
D.
Only they can by working hard
【单选题】The only dramatist ever to win a Nobel Prize was ___________.
A.
Bernard Shaw
B.
Eugene O’Neil
C.
Richard Brinsley Sheridan
D.
William Shakespeare
【简答题】目前，我国的森林覆盖率是（）
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