我
- A.0
- B.<img src="//img1.yqda.net/question-name/f9/f8f2aff503a337ba9eaabd67b5f600.png" width="27" height="33"/>
- C.<img src="//img1.yqda.net/question-name/27/bcf4bd1bbe00adb858938a933c0066.png" width="22" height="35"/>
- D.<img src="//img1.yqda.net/question-name/a5/0a9e657707332b53dff436eadd14a1.png" width="30" height="38"/>
- A.2
- B.3
- C.4
- D.5
- A.<img src="//img1.yqda.net/question-name/8e/79faed7ffa4e112d1d6f0c10d96e00.png" width="27" height="35"/>
- B.3EI
- C.<img src="//img1.yqda.net/question-name/55/4bbfaf672ba5fb821af07d7b73e04c.png" width="35" height="33"/>
- D.4EI
- A.δ<sub>12</sub>=0
- B.δ<sub>11</sub>=0
- C.△<sub>1p</sub>=0
- D.△<sub>2p</sub>=0
)
- A.<img src="//img1.yqda.net/question-name/8b/4eda8d6c102b3e129615aed1bfa563.png" width="20" height="40"/>
- B.<img src="//img1.yqda.net/question-name/94/1a318fd844b0259818600eb3e0c358.png" width="26" height="38"/>
- C.<img src="//img1.yqda.net/question-name/be/545a87d4b6f447a11ddc009d42e141.png" width="26" height="33"/>
- D.<img src="//img1.yqda.net/question-name/a9/654c76f1203695fd6c500369cc796a.png" width="26" height="32"/>
- 20
-
图示结构的力法基本结构为
- A.<img src="//img1.yqda.net/question-name/b4/7a1ceda0cb59717249f2709e795e4d.png" width="113" height="97"/>
- B.<img src="//img1.yqda.net/question-name/b3/eec292c3f51211be59139cda70bbbd.png" width="104" height="94"/>
- C.<img src="//img1.yqda.net/question-name/5c/a04771108c47ffdbd984e2ace20342.png" width="110" height="90"/>
- D.<img src="//img1.yqda.net/question-name/57/af79de33cbe547bd3456a9bfc84e6a.png" width="112" height="97"/>
- 21
-
图示桁架中，零杆个数等于
- A.2
- B.3
- C.4
- D.5
- A.—对同向单位集中力
- B.—对反向单位集中力
- C.一对同向单位集中力偶
- D.—对反向单位集中力偶
- 23
-
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
- A.-2Fpa
- B.-Fpa
- C.Fpa
- D.2Fpa
