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设在点的某邻域内连续,且具有一阶连续导数,并有,则( )c4bdda43b98734829125d21ef4c00bc3.png34f20f8899804902359a1417ac999f5f.png1647aea215b9a2a41c2e190429e2bc9c.pngc5de8e235202c94bc34fc29ca89e36dc.png
复数和复平面上的向量是一一对应的,向量的长度称为复数的模354820ef4199329d93f3253567d0eef1.gif19cb74af483435b384f621389aa1f344.gif3922c6571dc10f8402762e3f13e8983f.gifc56c4206c9b543fc28e996eab3ed00cd.gif
悬臂梁AB和CD,用弹性杆BC连接如图所示,其变形协调条件为( )。931bb63c0932a890f4d19037c4c98392
拍, 拍, 拍都属于混合拍子。b35e3f66fc29018aaf243bbe048dae94.jpg06a226a8e70b5d9a107b3be0df7fb55d.jpge670b20cf2317e02bfd10a800d37620b.jpg
拍,拍都属于混合拍子。b35e3f66fc29018aaf243bbe048dae94.jpg06a226a8e70b5d9a107b3be0df7fb55d.jpg
曲线 与 轴所围部分的面积为:( )4fc5981a0962ab498f6c76a5209d429e.png6dd4828d8821c7b0d8e7bc960133a2bf.png
下列转化中应用到的合成中的手段是:http://image.zhihuishu.com/zhs/onlineexam/ueditor/201807/316b5e645eb046bd833df776c136c7e1.png
根据解题步骤,选择正确答案。649fae839c492e4c52fc04f95a5dc1bc.JPG
根据俯视图,下列正确的主视图是( )。A B C D8108ffb623c94de2b266a36cd9f2f7d7.jpg1cd5799c6d3becc7f8b6fb00e3f03c29.jpgec1906dc5be6f37bc2f60aaf9c7a5929.jpg4c12c0befe765523d998b603d626fb3b.jpg00713417f4a3ab2026ff65fdf310117c.jpg
已知电路如图所示,T1和T2管的饱和管压降最大输出功率Pow 。c4d059e3c9a5b9b6ed7c3f86614fc2b7.gif65e23034f26330d4728fe04e79acc9d6.png
若作用在A点的两个大小不等的力 和 ,沿同一直线但方向相反。则其合力可以表示为( )。a034c1eea12e316c4c502defadb70a62.png1417c76a7c9cab8f5c4c0d19c1eedbe8.pnga3c567d4eff1ebb66fc0603781e472e3.png
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请选出正确的断面图表示方法950c924ca4370c7f559879b5e65b05b5.png
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已知逻辑函数Y=ABC+CD,Y=1的是()。A.A=0,BC=1B.BC=1,D=1C.AB=1,CD=0D.C=1,D=0
阅读下面材料,回答 121~124 题<img src='https://img2.soutiyun.com/ask/uploadfile/3720001-3723000/fc792bc44a35c12dfb19c7b627dda1df.gif' />第 121 题 某药材公司董事长未在合同上签字,对该合同效力判断正确的是()。
下列IgFc受体及相应CD编号,哪一组是错误的 ()A、FcγRⅠ/CD64B、FcγRⅡ/CD32C、FcγRⅢ/CD16D、FcαR/
法国画家达维特的这幅作品表现了___<img src='https://img2.soutiyun.com/ask/uploadfile/11103001-11106000/43b5cd64b6dfc0131b646a45e752fc02.png' />