5.1 图示结构中,设F、q、a均为已知,截面 https:/img.zuoyebang.cc/zyb_502b0d4ad71f763a30c4113f8e8a02a8.jpg-1 -2 3-3 无限接近于截面C或截面-|||-D。试求截面 https:/img.zuoyebang.cc/zyb_502b0d4ad71f763a30c4113f8e8a02a8.jpg-1 -2 3-3 上的剪力和弯矩。-|||-Me=qa^2 F=qa F=200N-|||-2 1 q 3-|||-A 1|C 2 D-|||-A A B B-|||-A C-|||-2 1-|||-a a 200 200 2 3 200-|||-(a) (b)-|||-Me=qa^2 F=qa-|||-1 2 10 kN/m q 1 2-|||-A C D B-|||-C 2|D-|||-B A-|||-1 177 2-|||-200 200 200 a a a-|||-(c) (d)

https:/img.zuoyebang.cc/zyb_e8bd054ef3dd65e8f324cadbf8b2d8a0.jpg-beta , 且β已知 E.

4-|||-https:/img.zuoyebang.cc/zyb_218762fe585dbabaa8e3f46957a71dcd.jpg 0 .-1 2-|

解方程 https:/img.zuoyebang.cc/zyb_7e8f43fce8d9495be1e56a8b33129708.jpg+(e)^2=0.

1-5: 在273.15 K和 https:/img.zuoyebang.cc/zyb_0c3287c166f6d57f916e1779f3f8b8fd.jpg

某天早 https:/img.zuoyebang.cc/zyb_8cea8f9e1e44fee4a53b84b1b8d04a09.jpg.9 点至晚 https

sqrt [4](2) C. dfrac (1)(2) D. https:/img.zuoyebang.cc/zyb_8aa7776a94adbf79d8d68

+dfrac (69)(71)+dfrac (70)(71)-|||-(6) https:/img.zuoyebang.cc/zyb_3b69f3c8a7379

2.3在题2.1(c)中,若 https:/img.zuoyebang.cc/zyb_ddd2bcf27029d27fb3b9f89aa8e07417.jpg-

6.总体X的概率分布为-|||-x 0 1 2 3-|||-P θ^2 (1-0) θ^2 https:/img.zuoyebang.cc/zyb_d23f4d

5-12 用SO2含量为 https:/img.zuoyebang.cc/zyb_434dea94d0f8a0c38b72f7c69f32418d.jpg.1t