设为某函数的全微分，则（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/2d16c7c4c93d419c908abafce90d46a2.png
举一反三
- 内压球形容器的应力为： A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/7a7e20156c8c4502840fc258ffe21c74.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/6b137ba6e7464b2c8122eced2a3d45cd.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/3c032f5116a04b288400df17925e39c2.png"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/85ca21668f4045e2b864897bc3795fdf.png">
- 求函数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/c7a245151812467d85af7a1cf91a4be0.png在点http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/917120f5d9354f20ad871d7acfc759d1.png处全微分，则http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/63eafd5e56d84117ba59026b91c8059e.png（ ）<br>
- 求函数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/361e09047ee249c2aae41c70ca0a3a65.png的全微分，则 http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/ae64679f9fa245faa51cd0921b947081.png（ ）<br><br>
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/75f92f05d558450f9e68e52200633e6b.png
- http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/f6ebadff38ba4857862e848abba5ff8f.png