- A.减小l
- B.增大k
- C.增大m
- D.增大EI
- A.6
- B.7
- C.8
- D.9
- A.15kN·m
- B.30kN·m
- C.35kN·m
- D.42.5 kN·m
- A.<img src="//img1.yqda.net/question-name/32/a84ab0d0ad0b0e2e762676fae1c1ea.png" width="63" height="31"/>
- B.<img src="//img1.yqda.net/question-name/7e/d1641707a6b5190c49f98d1ae3ab23.png" width="60" height="31"/>
- C.<img src="//img1.yqda.net/question-name/9f/5cbb0c1f68751f672d387390f91799.png" width="50" height="37"/>
- D.<img src="//img1.yqda.net/question-name/f0/8afbc698899ddd877d9782afc26df7.png" width="52" height="38"/>
- A.0
- B.<img src="//img1.yqda.net/question-name/5e/57a03b9c332b43cf0c8ee551ecd549.png" width="41" height="37"/>
- C.<img src="//img1.yqda.net/question-name/30/49c0302da31e827c7029eb06ae7a41.png" width="35" height="34"/>
- D.<img src="//img1.yqda.net/question-name/d8/a2550b37b5973d72d9083e1b0c9fd6.png" width="38" height="41"/>
- A.<img src="//img1.yqda.net/question-name/96/f894954a0c64684f6041e184dd0a9d.png" width="109" height="109"/>
- B.<img src="//img1.yqda.net/question-name/a9/2da162c617719fa59b1ddc6eb91099.png" width="126" height="95"/>
- C.<img src="//img1.yqda.net/question-name/2a/ba04b442da8b753d84d38e6251e6e9.png" width="123" height="92"/>
- D.<img src="//img1.yqda.net/question-name/87/46756a49237ce19fc03ef44b3f9f93.png" width="109" height="91"/>
- A.<img src="//img1.yqda.net/question-name/ba/3992f4b707636630b78a63aa5b3e25.png" width="127" height="102"/>
- B.<img src="//img1.yqda.net/question-name/96/9a05566a0c08c4f2477839a19b1640.png" width="119" height="102"/>
- C.<img src="//img1.yqda.net/question-name/56/b96b0110ab5a2c235825dfa3b3deeb.png" width="114" height="95"/>
- D.<img src="//img1.yqda.net/question-name/06/1f065a3429d73d7908374ab6775986.png" width="113" height="103"/>
- 24
-
图示结构,1杆的轴力为
- A.<img src="//img1.yqda.net/question-name/6e/a373caf0b53b55ef54aaf48288d4f1.png" width="47" height="24"/>
- B.0
- C.<img src="//img1.yqda.net/question-name/f7/685a871475f089d6236c2619c26d7a.png" width="40" height="25"/>
- D.<img src="//img1.yqda.net/question-name/0f/d7b402ff14ce5782accbb5df4b9a69.png" width="45" height="25"/>
- A.F<sub>P1</sub>△<sub>11</sub>=F<sub>P2</sub>△<sub>22</sub>
- B.F<sub>P1</sub>△<sub>12</sub>=F<sub>P2</sub>△<sub>21</sub>
- C.F<sub>P1</sub>△<sub>11</sub>=F<sub>P2</sub>△<sub>21</sub>
- D.F<sub>P1</sub>△<sub>12</sub>=F<sub>P2</sub>△<sub>22</sub>
- A.-F<sub>P</sub>a
- B.0
- C.F<sub>P</sub>a
- D.2F<sub>P</sub>a