- A.<img src="//img1.yqda.net/question-name/1b/8487b47fe0a21bf4ff225a56034584.png" width="91" height="122"/>
- B.<img src="//img1.yqda.net/question-name/3e/41554d18ace45d28564ccebaa0173f.png" width="89" height="114"/>
- C.<img src="//img1.yqda.net/question-name/31/93edd445ac1e77b54d39e781cae568.png" width="106" height="120"/>
- D.<img src="//img1.yqda.net/question-name/22/ab5a476972cfb50f9de10b94bfbffd.png" width="91" height="122"/>
- A.-1kN·m
- B.0
- C.0.5kN·m
- D.1kN·m
- 18
-
图示桁架,c杆的轴力等于
- A.-Fp/2
- B.0
- C.Fp/2
- D.Fp
- A.-30kN·m
- B.-10kN·m
- C.10kN·m
- D.30kN·m
- A.11EI/l
- B.12EI/l
- C.13EI/l
- D.14EI/l
- A.<img src="//img1.yqda.net/question-name/98/0d5a5a8f3c2763df36e205acaff0a2.png" width="148" height="63"/>
- B.<img src="//img1.yqda.net/question-name/38/30586f6d2497562185debe1acbf497.png" width="141" height="62"/>
- C.<img src="//img1.yqda.net/question-name/71/33002da507c5a5fe1ff81985f911c1.png" width="152" height="64"/>
- D.<img src="//img1.yqda.net/question-name/27/8fa5cb3f507175100e6f2448017599.png" width="144" height="60"/>
- A.固定支座
- B.铰支座
- C.定向支座
- D.自由端
- 23
-
图示结构的超静定次数为
- A.1次
- B.2次
- C.3次
- D.4次
- A.等于零
- B.方向向左
- C.方向向右
- D.方向与EA有关
- 25
-
图示体系为
- A.无多余约束的几何不变体系
- B.有多余约束的几何不变体系
- C.瞬变体系
- D.常变体系