A: 2[img=18x21]1802dead28c3ca5.png[/img]22
B: 2[img=18x21]1802dead28c3ca5.png[/img]25
C: 4[img=18x21]1802dead28c3ca5.png[/img]22
D: 4[img=18x21]1802dead28c3ca5.png[/img]25
举一反三
- 该梁左侧第二排支座负筋为[img=810x377]1803985b172991d.png[/img] A: 2[img=18x21]1803985b1f8888e.png[/img]22 B: 2[img=18x21]1803985b1f8888e.png[/img]25 C: 4[img=18x21]1803985b1f8888e.png[/img]22 D: 4[img=18x21]1803985b1f8888e.png[/img]25
- 该梁左侧第二排支座负筋为[img=810x377]1802f40f9f7e0a4.png[/img] 未知类型:{'options': ['2[img=18x21]1802f40fa8c57cc.png[/img]22', '2[img=18x21]1802f40fa8c57cc.png[/img]25', '4[img=18x21]1802f40fa8c57cc.png[/img]22', '4[img=18x21]1802f40fa8c57cc.png[/img]25'], 'type': 102}
- 该梁的支座负筋为[img=1022x688]1803985aabd857f.png[/img] 未知类型:{'options': ['2[img=18x21]1803985ab4d704d.png[/img]20', '4[img=18x21]1803985abcdf0b1.png[/img]20', '3[img=18x21]1803985ac69ca83.png[/img]20', '6[img=18x21]1803985aceb9c6e.png[/img]20'], 'type': 102}
- 梁的上部有四根纵筋,2[img=18x21]180369dc9f06775.png[/img]25放在角部,2[img=18x21]180369dc9f06775.png[/img]12放在中部作为架立筋,在梁支座上部应注写 A: 2[img=18x21]180369dcb043eeb.png[/img]25+2[img=18x21]180369dcb8c37f3.png[/img]12 B: 2[img=18x21]180369dcc188823.png[/img]25+(2[img=18x21]180369dcca279af.png[/img]12) C: 2[img=18x21]180369dcd343e3a.png[/img]25;2[img=18x21]180369dcdc457b7.png[/img]12 D: 2[img=18x21]180369dce571c4a.png[/img]25(2[img=18x21]180369dcee4875b.png[/img]12)
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
内容
- 0
该梁左侧第一排支座负筋为[img=810x377]180369db6f4ef9d.png[/img] A: 2[img=108x156]180369db79d338f.png[/img]22 B: 2[img=108x156]180369db79d338f.png[/img]25 C: 4[img=108x156]180369db79d338f.png[/img]22 D: 4[img=108x156]180369db79d338f.png[/img]25
- 1
有两个反应:(1)[img=173x33]17e4445e3c727e1.jpg[/img],[img=18x21]17e43d0aec4520a.jpg[/img],(2)[img=174x19]17e44452df1076c.jpg[/img],[img=18x21]17e43d0af421fd4.jpg[/img];则[img=18x21]17e43d0aec4520a.jpg[/img]与[img=18x21]17e43d0af421fd4.jpg[/img]的关系是() 未知类型:{'options': ['17e43d0aec4520a.jpg=[img=18x21]17e43d0af421fd4.jpg[/img]', ' [img=39x34]17e4445ecd5e21e.jpg[/img]=[img=18x21]17e43d0af421fd4.jpg[/img]', ' [img=18x21]17e43d0aec4520a.jpg[/img]=[img=39x34]17e4445ed73af58.jpg[/img]', ' [img=18x21]17e43d0aec4520a.jpg[/img]=2[img=18x21]17e43d0af421fd4.jpg[/img]'], 'type': 102}
- 2
设二维随机变量(X,Y)的联合概率密度为[img=433x109]17d609a6fbff1b1.png[/img]则[img=133x37]17d609a707b0d2a.png[/img]=()。 A: 3/20 B: 5/16 C: 5/24 D: 5/18
- 3
求微分方程 [img=635x61]17da6537085dd29.png[/img] 的特解; ( ) A: (3*sin(5*x))/exp(2*x) B: exp(2*x) C: (3*sin(5*x)) D: (3*cos(5*x))/exp(2*x)
- 4
求不定积分[img=115x46]17da65382f8e1b9.png[/img]; ( ) A: x - (5*log(x + 1))/4 - (3*log(x - 3)) B: (5*log(x + 1))/4 - (3*log(x - 3)) C: x - (5*log(x + 1))/4 - (3*log(x - 3))/4 D: (5*log(x + 1))/4 - (3*log(x - 3))/4