点M在棱锥上，投影正确与否https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/7bffa9024d7d4af49ad683e69a737af6.png
举一反三
- 下列函数在定义域上为单调增函数的是（ ） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/211e70b83e274d979fe0f82e370dde04.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/592975f906cc4dcc93af5cf8efb72a6c.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/5af23319fbba416db4948cf10778b93c.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/429b274252eb4b1dbd6dfeb4e8513b9b.png" />
- 剖视图正确的画法是 。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/9537d515da014e68a3d3cb450f99ad38.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1a23c24f84774377874f0c38fd153a7e.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/f5954dedb8bd4b788a4a43c7a11266a7.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/bd015ac5086848d3876260b7aaf6bfc5.png">
- 下列各表达式正确的是（）。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/c00e74606aff46b3bd686c1cbb405da6.gif" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/a9452605ec5b4dfc8fede5ae6baae903.gif" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/316677d9b4fe41d09b0ef5f8b18e4a0b.gif" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1d4a5808f5524820897bf23dd439ad0c.gif" />
- 下列命名正确的是( ) A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/45d758d675564df2b279142c14ae9e2e.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/4889492bf6634f04b7c4e5c944f66ed8.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/70bc128530144f07aa006af0ebe6a989.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/ddcdceddcb9a49bf8ab24aea015a7a9a.png">
- 下图中，点A在棱柱上，其投影绘制正确的是https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/2438dd0500574b068598a9ca4ff03614.png