02439结构力学(二)自考真题2017年4月
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- 18
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设单自由度体系的自振周期为T0,若体系的刚度系数k增大到原来的2倍,则其自振周期T等于
- A.<img src="//img1.yqda.net/question-name/cf/ec91d450f67b1f25dc687d1d7c49e1.png" width="26" height="35"/>
- B.<img src="//img1.yqda.net/question-name/6c/c47ecfbd36981a828e7804eaeef0f6.png" width="37" height="41"/>
- C.<img src="//img1.yqda.net/question-name/04/e4cc14d09d912a80e2ac76844c3e44.png" width="36" height="28"/>
- D.2T<sub>0</sub>
- 19
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图示刚架(EI=常数)BD杆的B端剪力FQBD等于

- A.<img src="//img1.yqda.net/question-name/1f/3d3b38e7fc1474cea6170150c2ee85.png" width="43" height="41"/>
- B.<img src="//img1.yqda.net/question-name/fd/4069c9122e7fcabd7b245b6d3a1277.png" width="40" height="35"/>
- C.<img src="//img1.yqda.net/question-name/48/7ad989f5482829035fcb17175bde88.png" width="29" height="41"/>
- D.<img src="//img1.yqda.net/question-name/0e/67dccadc9ded149224b85a6ba48e0c.png" width="33" height="38"/>
- 21
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用力法解图示超静定结构,可以选作基本结构的为

- A.<img src="//img1.yqda.net/question-name/8b/b890ffbc4a24f47285c3bf7ca6349c.png" width="88" height="75"/>
- B.<img src="//img1.yqda.net/question-name/ec/066b59b8a5731958853dde86a082f7.png" width="81" height="90"/>
- C.<img src="//img1.yqda.net/question-name/31/3095cbbfb2b7f9170e8834105c048c.png" width="90" height="86"/>
- D.<img src="//img1.yqda.net/question-name/3d/1d22c11a80908220083c2fa848aef6.png" width="99" height="92"/>
- 25
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图示三铰刚架,AB杆B端弯矩(内侧受拉为正)等于

- A.<img src="//img1.yqda.net/question-name/82/dd214158e9c2e232b991bd3401ef39.png" width="44" height="37"/>
- B.<img src="//img1.yqda.net/question-name/6d/7dd771900cb330e0da04a4378e6d74.png" width="31" height="37"/>
- C.<img src="//img1.yqda.net/question-name/e6/2d657d91fe9177a23db39d59b56063.png" width="26" height="35"/>
- D.<img src="//img1.yqda.net/question-name/c5/fbb1ae2a3a907ac11d6f9f6e94a4c8.png" width="29" height="35"/>
- 26
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图示多跨静定梁,A支座反力FA等于

- A.-2F<sub>P</sub>
- B.-F<sub>p</sub>
- C.F<sub>p</sub>
- D.2F<sub>p</sub>