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提问人:网友ljc525king
发布时间:2022-01-07
[单选题]
已知AB梁上作用一力偶,力偶矩为M,梁长为l。则图中梁支座反力FA、FB大小为多少?
已知AB梁上作用一力偶,力偶矩为M,梁长为l。则图中梁支座反力FA、FB大小为多少?![已知AB梁上作用一力偶,力偶矩为M,梁长为l。则图中梁支座反力FA、FB大小为多少?](https://img2.soutiyun.com/shangxueba/ask/19425001-19428000/19427525/5175aaa-chaoxing2016-237401.png)
A.FA=M/l, FB=M/lcosα
B.FA=M/l, FB=M/l
C.FA=M/lcosα, FB=M/lcosα
D.FA=M/lcosα, FB=M/l
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_q_ckda.png)
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- · 有4位网友选择 C,占比40%
- · 有2位网友选择 D,占比20%
- · 有2位网友选择 B,占比20%
- · 有2位网友选择 A,占比20%