梁上某段有均布荷载作用，即q = 常数，那么剪力图为与x成一定角度的斜直线，弯矩图为二次抛物线
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欧洲对中国的认识始于丝绸,古希腊人和古罗马人将丝绸称为“西尔克”。
A. 对
B. 错
When they find out I was looking for New Gerard, one said: “Oh, just follow us; that’s where we’re going.”
A. 对
B. 错
Even now I feel comfortable in the dorm because there are friendly people around to talk with.
A. 对
B. 错
()时期,南北民族融合是沿丝绸之路的东段进行。
A. 乌孙
B. 鲜卑
C. 匈奴
D. 月氏
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