5.mp3: <img left="" src='\"/js/editor20131024/dialogs/attachment_new/fileTypeImages/icon_mp3.gif\"/' style='\"float:'/>

图示两条曲线分别表示在相同温度下氧气和氢气分子的速率分布曲线.如果和分别表示氧气和氢气的最概然速率，则（）（答案选D） <img src='\"http://p.ananas.chaoxing.com/star3/origin/5733f00ae4b0809f24191305.jpg\"title=\"1.jpg\"style=\"float:left;\"/'/>

在img标记中， 设置属性align=\left\，表示（ ）。

如下图所示，<img src='https://img2.soutiyun.com/ask/2020-01-07/94725988610853.png' />应为( )。<img src='https://img2.soutiyun.com/ask/2020-01-07/947259894250194.png' />

已知两个线性变换<img src='https://img2.soutiyun.com/ask/2020-07-24/964447450539867.png' />，求从<img src='https://img2.soutiyun.com/ask/2020-07-24/964447482729708.png' />到<img src='https://img2.soutiyun.com/ask/2020-07-24/964447490132131.png' />的线性变换。

若<img src='https://img2.soutiyun.com/latex/latex.action' />，<img src='https://img2.soutiyun.com/latex/latex.action' />，则下列式子成立的是( )

直线<img src='https://img2.soutiyun.com/ask/2020-02-18/950884563792837.png' />与直线<img src='https://img2.soutiyun.com/ask/2020-02-18/950884577991765.png' />的关系是( )

已知z=lnu，<img src='https://img2.soutiyun.com/latex/latex.action' />，则<img src='https://img2.soutiyun.com/latex/latex.action' />( )

设<img src='https://img2.soutiyun.com/latex/latex.action' />则<img src='https://img2.soutiyun.com/latex/latex.action' />=( )．

男性，40岁，发现左侧颈部小包块，CT、MRI检查如图所示，请选择最可能的诊断（）<img src='https://img2.soutiyun.com/shangxueba/ask/18300001-18303000/18301269/2016072818164956119.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18300001-18303000/18301269/2016072818165646074.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18300001-18303000/18301269/2016072818170225050.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18300001-18303000/18301269/20160728181708767.jpg' />

病历摘要：脑膜瘤患者女，55岁，视力下降数月。查体：视力下降，余神经体征阴性。<img src='https://img2.soutiyun.com/shangxueba/ask/21054001-21057000/21056152/2016080411361155670.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/21054001-21057000/21056152/2016080411363213140.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/21054001-21057000/21056152/2016080411363770796.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/21054001-21057000/21056152/2016080411364194722.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/21054001-21057000/21056152/2016080411364682394.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/21054001-21057000/21056152/2016080411365145350.jpg' />

女，3岁，右耳出生至今耳聋，结合图像，最可能的诊断是（）<img src='https://img2.soutiyun.com/shangxueba/ask/18597001-18600000/18599943/2015111217172541240.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18597001-18600000/18599943/2015111217172661526.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18597001-18600000/18599943/2015111217172726731.jpg' />

将函数f(x)＝x²在<img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617062459326.jpg' />上展开成余弦级数，其形式为<img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617063532608.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617065141640.jpg' />（）<img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617071375522.jpg' />

某一水泵的流量为<img src='https://img2.soutiyun.com/shangxueba/ask/18726001-18729000/18727196/20150618111622761.jpg' />，漏损流量为<img src='https://img2.soutiyun.com/shangxueba/ask/18726001-18729000/18727196/2015061811163167874.jpg' />，叶轮内的流量为<img src='https://img2.soutiyun.com/shangxueba/ask/18726001-18729000/18727196/2015061811163945969.jpg' />，则其容积效率<img src='https://img2.soutiyun.com/shangxueba/ask/18726001-18729000/18727196/2015061811164812800.jpg' />为（）。

如果把图示电路中的变压器视为理想器件，<img src='https://img2.soutiyun.com/shangxueba/ask/18774001-18777000/18774272/2016071815505494842.jpg' />时，（）。<img src='https://img2.soutiyun.com/shangxueba/ask/18774001-18777000/18774272/201607181551011369.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18774001-18777000/18774272/2016071815510514617.jpg' />

利用上颌双侧<img src='https://img2.soutiyun.com/shangxueba/ask/17559001-17562000/17561302/2015093009262249313.jpg' />垫矫正反<img src='https://img2.soutiyun.com/shangxueba/ask/17559001-17562000/17561302/2015093009262249313.jpg' />，反<img src='https://img2.soutiyun.com/shangxueba/ask/17559001-17562000/17561302/2015093009262249313.jpg' />解除后<img src='https://img2.soutiyun.com/shangxueba/ask/17559001-17562000/17561302/2015093009262249313.jpg' />垫每次应磨去多少（）

一台4极中型异步电动机，P_N=200kW，U_N=380V,定子0联接，定子额定电流I_N=385A,频率50Hz,定子铜耗<img src='https://img2.soutiyun.com/ask/2021-01-03/978560273352189.png' />=5.12kW.转子铜耗<img src='https://img2.soutiyun.com/ask/2021-01-03/978560286697952.png' />=2.85kW,铁耗<img src='https://img2.soutiyun.com/ask/2021-01-03/978560298531629.png' />=3.8kW，机械损耗<img src='https://img2.soutiyun.com/ask/2021-01-03/97856031340548.png' />=0.98kW，附加损耗<img src='https://img2.soutiyun.com/ask/2021-01-03/978560322980028.png' />=3kW，<img src='https://img2.soutiyun.com/ask/2021-01-03/978560339469971.png' />.正常运行时<img src='https://img2.soutiyun.com/ask/2021-01-03/978560353474772.png' />，起动时<img src='https://img2.soutiyun.com/ask/2021-01-03/978560375203015.png' />，由于磁路饱和与趋肤效应的影响，<img src='https://img2.soutiyun.com/ask/2021-01-03/978560441999835.png' /><img src='https://img2.soutiyun.com/ask/2021-01-03/97856039470213.png' />.试求:

设<img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264374908477.png' />是n维实向量,且<img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264387229182.png' />战性无关,<img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264401121976.png' /><img src='https://img2.soutiyun.com/shangxueba/ask/51291001-51294000/51293683/975264415373792.png' />是线性方程组

点（1，2，1）到平面<img src='https://img2.soutiyun.com/shangxueba/ask/19032001-19035000/19032905/2015110115113928560.png' />+2<img src='https://img2.soutiyun.com/shangxueba/ask/19032001-19035000/19032905/2015110115114815657.png' />+2<img src='https://img2.soutiyun.com/shangxueba/ask/19032001-19035000/19032905/2015110115115812967.png' />-10＝0的距离为（）。

有限长序列<img src='https://img2.soutiyun.com/shangxueba/ask/18120001-18123000/18120993/2016031714031255938.jpg' />=（）。<img src='https://img2.soutiyun.com/shangxueba/ask/18120001-18123000/18120993/2016031714041772379.jpg' />

可以直接利用模型上余留牙确定<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />关系的是（）。需要用<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />堤确定正中<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />位关系及垂直距离的是（）。需要用<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />堤确定正中<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />位关系和中线的是（）。需要用蜡<img src='https://img2.soutiyun.com/shangxueba/ask/17538001-17541000/17540854/2015082211124147883.jpg' />记录确定颌位记录的是（）。

女，19岁，发现左颈部无痛性肿块2年余，可活动，CT如图所示，最可能诊断为（）<img src='https://img2.soutiyun.com/shangxueba/ask/18291001-18294000/18291851/2016072817403713681.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18291001-18294000/18291851/2016072817404619041.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18291001-18294000/18291851/2016072817405389051.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18291001-18294000/18291851/2016072817410029572.jpg' />

若<img src='https://img2.soutiyun.com/latex/latex.action' />，<img src='https://img2.soutiyun.com/latex/latex.action' />试证明时域卷积定理<img src='https://img2.soutiyun.com/latex/latex.action' />和频域卷积定理<img src='https://img2.soutiyun.com/latex/latex.action' />

男，4个月，相貌怪异，结合图像，最可能的诊断（）<img src='https://img2.soutiyun.com/shangxueba/ask/17796001-17799000/17798971/201511231032013640.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/17796001-17799000/17798971/2015112310320224881.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/17796001-17799000/17798971/201511231032042853.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/17796001-17799000/17798971/2015112310320644602.jpg' />

图示容器内盛有两种不同的液体，密度分别为<img src='https://img2.soutiyun.com/shangxueba/ask/17952001-17955000/17953624/2016031609491463375.jpg' />，<img src='https://img2.soutiyun.com/shangxueba/ask/17952001-17955000/17953624/2016031609492489129.jpg' />，则有（）。<img src='https://img2.soutiyun.com/shangxueba/ask/17952001-17955000/17953624/2016031609493123018.jpg' />