题331图所示梁在图示行列荷载作用下,反力FRA的最大值为()kN。<img src='https://img2.soutiyun.com/1/2021-04-08/986750402639344.jpg' />
槽钢檩条(跨中设一道拉条)的强度按公式<img src='https://img2.soutiyun.com/ask/2019-11-28/943748447323015.png' />计算时,计算的位置是( )。
应用有效数字规则计算<img src='https://img2.soutiyun.com/latex/latex.action' />的结果为( )
计算下列三角函数值的近似值:<img src='https://img2.soutiyun.com/ask/2020-02-22/951218228363383.png' />
判断下列各广义积分的敛散性,若收敛,计算其值:<img src='https://img2.soutiyun.com/ask/2020-02-20/951076511215764.png' />
15.选用适当的坐标计算下列各题:<img src='https://img2.soutiyun.com/ask/2020-02-24/951410575923193.png' /><img src='https://img2.soutiyun.com/ask/2020-02-24/951410583637991.png' />
已知乙醇的标准沸点是78℃,<img src='https://img2.soutiyun.com/ask/2020-09-20/969471531436313.png' />计算10.0kPa时乙醇的沸点.
计算D<sub>5</sub>=<img src='https://img2.soutiyun.com/ask/2020-11-16/974389531976607.png' />
计算在pH=1.0时,草酸根的<img src='https://img2.soutiyun.com/ask/2020-10-22/972215751958235.png' />
. 试计算矩阵的特征值及对应的特征向量:<img src='https://img2.soutiyun.com/ask/2020-03-04/952195931155768.png' />
在计算线路电压损失公式:<img src='https://img2.soutiyun.com/shangxueba/ask/17757001-17760000/17759007/2015051615411856641.jpg' />中QX项前的符号是()。
利用幂级数展开,计算<img src='https://img2.soutiyun.com/shangxueba/ask/51432001-51435000/51432829/980695520313543.png' />。
在两因素分析法中,经济增长率的计算公式为()。<img src='https://img2.soutiyun.com/ask/2020-05-10/95798005198986.jpg' />
在什么情况下可采用双筋截面?其计算应力图形如何确定?其基本计算公式与单筋截面有和不同?在双筋截面中受压钢筋起什么作用?其适应条件除了满足<img src='https://img2.soutiyun.com/shangxueba/ask/18738001-18741000/18740192/2014110509325913034.jpg' />之外为什么还要满足<img src='https://img2.soutiyun.com/shangxueba/ask/18738001-18741000/18740192/2014110509331212663.jpg' />?
利用<img src='https://img2.soutiyun.com/ask/2020-07-27/964692130603308.png' />数据,试计算下列反应的等压反应热:
地基压缩层的计算深度z应满足式<img src='https://img2.soutiyun.com/shangxueba/ask/18519001-18522000/18519169/201510300931081470.png' />,其中△s<img src='https://img2.soutiyun.com/shangxueba/ask/18519001-18522000/18519169/2015103009312055805.png' />′的意义是()。
航海上,公式DO(nmile)=2.09<img src='https://img2.soutiyun.com/shangxueba/ask/19020001-19023000/19020312/2015011716340843592.jpg' />+2.09<img src='https://img2.soutiyun.com/shangxueba/ask/19020001-19023000/19020312/2015011716341099667.jpg' />是用于计算()。
计算机的配置信息如下图所示,这台计算机CPU的主频是()<img src='https://img2.soutiyun.com/shangxueba/ask/2022-04/22/127/20220422143616686.png' />
《钢规》的5.1.1条,对高强度螺栓承压型连接处的强度规定用σ=<img src='https://img2.soutiyun.com/shangxueba/ask/17856001-17859000/17856405/2015102909423863793.jpg' />和<img src='https://img2.soutiyun.com/shangxueba/ask/17856001-17859000/17856405/2015102909423985111.jpg' />计算,请问,为什么要对毛截面进行计算?
计算积分:<img src='https://img2.soutiyun.com/ask/2020-12-16/976984209185911.jpg' />
计算行列式:<img src='https://img2.soutiyun.com/ask/2020-08-10/965914913849051.png' />
菌落总数的计算公式:<img src='https://img.soutiyun.com/ask/zq/20210803/996838604823339.png' />其中nl是指()。
用Γ函数表示下列积分,并计算积分值<img src='https://img2.soutiyun.com/ask/2020-08-11/965988508368335.png' />
请计算下列电对在298K时的标准电极电势<img src='https://img2.soutiyun.com/ask/2020-07-29/964877767235939.png' />