【单选题】【消耗次数：1】
<img src=https://huaweicloudobs.ahjxjy.cn/E558DD394459C191E373556AF6F874B9.png title=QQ图片20160108164531.png alt=QQ图片20160108164531.png/><img src=https://huaweicloudobs.ahjxjy.cn/DEDB6F143AEBFB3A3588837B75988595.png title=QQ图片20160108164544.png alt=QQ图片20160108164544.png/>
①
３或４
②
１或２
③
１或３
④
２或４
参考答案：
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相关题目
【单选题】
设<img src=https://huaweicloudobs.ahjxjy.cn/EA6FB79FF8DF7A9F3A2D0CEB093C717F.png title=QQ图片20160224214006.png alt=QQ图片20160224214006.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>的偏导数存在，则<img src=https://huaweicloudobs.ahjxjy.cn/61AF63E59A60D6B49960C25A0B85414F.png title=QQ图片20160224214038.png alt=QQ图片20160224214038.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/588DCE737E539AFE5318232DBC0C8858.png title=QQ图片20160224214107.png alt=QQ图片20160224214107.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/1898B210FBB62DA4DA7997BB95A4D586.png title=QQ图片20160224214125.png alt=QQ图片20160224214125.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/C9D08ECB097A69F4F22594D120D687E7.png title=QQ图片20160224214140.png alt=QQ图片20160224214140.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/6101D759594C1C2892D8E9F8195520C5.png title=QQ图片20160224215328.png alt=QQ图片20160224215328.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/BB6602F8EBCDCBC4325AC6C2D402AC62.png title=QQ图片20160108172103.png alt=QQ图片20160108172103.png/><img src=https://huaweicloudobs.ahjxjy.cn/2185028B122EA820C3F12899EF40B3B5.png title=QQ图片20160108172114.png alt=QQ图片20160108172114.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/CC23C6DB5BA0BF66BBFFC2864C452A86.png title=QQ图片20160108172123.png alt=QQ图片20160108172123.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/EED4D03BD0C27BA6DF81137CB7AD483D.png title=QQ图片20160108172134.png alt=QQ图片20160108172134.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/161D2BDBBB638F1AEC50FA43244D2A9D.png title=QQ图片20160108172143.png alt=QQ图片20160108172143.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/3E2F5DB12481695A27D0760789A13712.png title=QQ图片20160108172158.png alt=QQ图片20160108172158.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/A7680902CB99663BA6E23408C5C4ABFB.png title=QQ图片20160108111419.png alt=QQ图片20160108111419.png/><img src=https://huaweicloudobs.ahjxjy.cn/F7C836FE5C2376120035EBE3D8C699B9.png title=QQ图片20160108111439.png alt=QQ图片20160108111439.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/51A1F02268CD4EAF0D1BB4C81A2C8981.png title=QQ图片20160108111454.png alt=QQ图片20160108111454.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/FAF724DB88B6F9338819B0ACF799FC7E.png title=QQ图片20160108111507.png alt=QQ图片20160108111507.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/D6D9581D650D608E065C2881AE35D6A8.png title=QQ图片20160108111520.png alt=QQ图片20160108111520.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/F1950DBF13A5E2F6DF6D0A2E7B40036B.png title=QQ图片20160108111532.png alt=QQ图片20160108111532.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/57132FE13F2DE4735F4D3F53FFED7853.png title=QQ图片20160108160451.png alt=QQ图片20160108160451.png/><img src=https://huaweicloudobs.ahjxjy.cn/171588FEB72EC6FE8DCA91F20C02650C.png title=QQ图片20160108160509.png alt=QQ图片20160108160509.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/11764A0C995D64C8A00BCA06E16E2899.png title=QQ图片20160108160522.png alt=QQ图片20160108160522.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/7BCA0CD43CAC629543F8E84CEC015783.png title=QQ图片20160108160534.png alt=QQ图片20160108160534.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/4AC1282EA7A7C78218566A46FCCB23CD.png title=QQ图片20160108160546.png alt=QQ图片20160108160546.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/36C21C21DE2405894D9ED59BC3F9E088.png title=QQ图片20160108160557.png alt=QQ图片20160108160557.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/8D7C7A8EE3EEB3AF2AD9D0586F98C6E1.png title=QQ图片20160108161124.png alt=QQ图片20160108161124.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/6841A05BCD04EBC5A5F1BC6999AA0046.png title=QQ图片20160108161139.png alt=QQ图片20160108161139.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/C5E09089BFFE2FB5001B0A653B00EA69.png title=QQ图片20160108161151.png alt=QQ图片20160108161151.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/983404DCA68270522F6155EC18BF7E8A.png title=QQ图片20160108161211.png alt=QQ图片20160108161211.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/72B88F20F3656223FBD4D527F304E1CC.png title=QQ图片20160108161221.png alt=QQ图片20160108161221.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/F22E424670D48EA8B00BF875A572F6D9.png title=QQ图片20160108102117.png alt=QQ图片20160108102117.png/><img src=https://huaweicloudobs.ahjxjy.cn/A7B8AB7EFE9A8EC7C2D83F83CE6AD874.png title=QQ图片20160108102145.png alt=QQ图片20160108102145.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/D1158E7E2A11A9F3FF830DEDCACFCE40.png title=QQ图片20160108102201.png alt=QQ图片20160108102201.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/5E167DEDAC45510EE9C136A2850BAEEB.png title=QQ图片20160108102216.png alt=QQ图片20160108102216.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/EAC49782558574996690E7E54E04DB82.png title=QQ图片20160108102237.png alt=QQ图片20160108102237.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/A97A1286364D01DF4D8429E6D441571A.png title=QQ图片20160108102252.png alt=QQ图片20160108102252.png/>
【单选题】
设D是圆环<img src=https://huaweicloudobs.ahjxjy.cn/C1E9D12458DFD4A14CD3882562ECD317.png title=QQ图片20160224231208.png alt=QQ图片20160224231208.png/>，且<img src=https://huaweicloudobs.ahjxjy.cn/19CA4355701DCCA8E9BFC90709B1C2E6.png title=QQ图片20160224231228.png alt=QQ图片20160224231228.png/>则<img src=https://huaweicloudobs.ahjxjy.cn/D387AD7A8CB622BCD1F542C7C350B136.png title=QQ图片20160224231244.png alt=QQ图片20160224231244.png/>（ ）
①
<img src=https://huaweicloudobs.ahjxjy.cn/9E7A64637000AEC0789E48D1E96AD66E.png title=QQ图片20160224231302.png alt=QQ图片20160224231302.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/AFF8BA7BECE58AC3901A521D7A606F30.png title=QQ图片20160224231314.png alt=QQ图片20160224231314.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/7E7DDA627E10663C0016B52FA149DC3A.png title=QQ图片20160224231331.png alt=QQ图片20160224231331.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/12F7546764221D5997C3F99846C7FF70.png title=QQ图片20160224231344.png alt=QQ图片20160224231344.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/E6F971FB23292AC5709EA0115127AB58.png title=QQ图片20160108154849.png alt=QQ图片20160108154849.png/><img src=https://huaweicloudobs.ahjxjy.cn/5CB2221C3D5876AD4ABC8F2B98D369AE.png title=QQ图片20160108154908.png alt=QQ图片20160108154908.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/9B3F683BB8BFB18660A35E24AD62557A.png title=QQ图片20160108154934.png alt=QQ图片20160108154934.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/A109FD62F164A97C17B9DFDBF40254CE.png title=QQ图片20160108154954.png alt=QQ图片20160108154954.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/0F3A702C9B959C5BA3AF810621C9AD06.png title=QQ图片20160108155039.png alt=QQ图片20160108155039.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/DEC11963ACB1713AA5E8D649B4C0BE8B.png title=QQ图片20160108155055.png alt=QQ图片20160108155055.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/A68A65205B1BAC4AA46A3A1869250DE4.png title=QQ图片20160108173533.png alt=QQ图片20160108173533.png/><img src=https://huaweicloudobs.ahjxjy.cn/ECB1F19EE76FA760B58611FB08747D51.png title=QQ图片20160108173551.png alt=QQ图片20160108173551.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/B0C584185CD7111F0104DDB5782B8D2C.png title=QQ图片20160108173600.png alt=QQ图片20160108173600.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/B6D6FAC8C3C0C1861571BB4E5966B9D8.png title=QQ图片20160108173609.png alt=QQ图片20160108173609.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/8FAE17C37FE8A266EB216070F4BE6C1C.png title=QQ图片20160108173618.png alt=QQ图片20160108173618.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/18C0A0C884DA8DCF17CDC93926EB1090.png title=QQ图片20160108173627.png alt=QQ图片20160108173627.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/641BEDBA3B6C85A73FD3EFD35DE4E4D3.png title=QQ图片20160108163236.png alt=QQ图片20160108163236.png/><img src=https://huaweicloudobs.ahjxjy.cn/288906281F47417A4DCC13585D2660C7.png title=QQ图片20160108163548.png alt=QQ图片20160108163548.png/>
①
１或２
②
－１或３
③
１或３
④
－１或－３
随机题目