【单选题】
设二阶线性非齐次方程<img src=https://huaweicloudobs.ahjxjy.cn/BF80E75DC88661040CEB417E72A89625.png title=QQ图片20160224221516.png alt=QQ图片20160224221516.png/>有三个特解<img src=https://huaweicloudobs.ahjxjy.cn/30ADB8C932A284BCD6D6FD43634CD976.png title=QQ图片20160224222755.png alt=QQ图片20160224222755.png/>，则则其通解为（ ）
①
<img src=https://huaweicloudobs.ahjxjy.cn/79BDF54DD0737592B3A67EA72A440242.png title=QQ图片20160224222917.png alt=QQ图片20160224222917.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/2805ACB453C0781F902D9FA252A1D5FD.png title=QQ图片20160224222932.png alt=QQ图片20160224222932.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/B6BB60DE9AB98BB12B14907339048EC1.png title=QQ图片20160224222949.png alt=QQ图片20160224222949.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/33E1A495886946BD8344FAA0C92C665A.png title=QQ图片20160224223005.png alt=QQ图片20160224223005.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/105E111DA681E95D88E4E4152F4C46E2.png title=QQ图片20160108165131.png alt=QQ图片20160108165131.png/><img src=https://huaweicloudobs.ahjxjy.cn/552A8C09885689EB452DA3865ADAD75D.png title=QQ图片20160108165150.png alt=QQ图片20160108165150.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/ADB11703F3BF0BE78DC47426463EAF9B.png title=QQ图片20160108165201.png alt=QQ图片20160108165201.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/CF13F3D7FB0D5D27421972F547B9024D.png title=QQ图片20160108165212.png alt=QQ图片20160108165212.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/4C5A9407AF48564313C1878511BA6749.png title=QQ图片20160108165227.png alt=QQ图片20160108165227.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/F67EF9F84F4FF33BA448182B54A32743.png title=QQ图片20160108165240.png alt=QQ图片20160108165240.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/0702A245E465EC5F9985BD3001E72590.png title=QQ图片20160108173213.png alt=QQ图片20160108173213.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/D7620645C039AB42BDA45AC9DF8A4E0C.png title=QQ图片20160108173223.png alt=QQ图片20160108173223.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/E2F67A00C22FCC8DCCEEBC28E7C48B57.png title=QQ图片20160108173233.png alt=QQ图片20160108173233.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/FA1B3280910B0907991CF210FB4F7E1D.png title=QQ图片20160108173242.png alt=QQ图片20160108173242.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/EB31196A7FCC218997F9CFAD3833AEA2.png title=QQ图片20160108173252.png alt=QQ图片20160108173252.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/BA431F283877766D27868D3013ABD5B8.png title=QQ图片20160108161448.png alt=QQ图片20160108161448.png/>＝（ ）。
①
<img src=https://huaweicloudobs.ahjxjy.cn/348F97BE382E037727723C780F8F559A.png title=QQ图片20160108161505.png alt=QQ图片20160108161505.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/EB5F5F8C1F76B567D3A765D7E259AC8F.png title=QQ图片20160108161517.png alt=QQ图片20160108161517.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/2A31BE7FD0312DDF2F74DBB5C4729669.png title=QQ图片20160108161528.png alt=QQ图片20160108161528.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/8CC9FABE491EF9031690A400233AD331.png title=QQ图片20160108161539.png alt=QQ图片20160108161539.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/1AFC99781900F0FEF9532B439FF5298E.png title=QQ图片20160108110317.png alt=QQ图片20160108110317.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/CBD0531D565A064F1A805FB9269FE681.png title=QQ图片20160108110342.png alt=QQ图片20160108110342.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/0F08B8D90569A6905E1771059F9059E1.png title=QQ图片20160108110354.png alt=QQ图片20160108110354.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/2CBF05FA669D425DFE08C2E50FE925CA.png title=QQ图片20160108110406.png alt=QQ图片20160108110406.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/DCF53310CD5CF0FA0F2BEA2D26DB2BA5.png title=QQ图片20160108110417.png alt=QQ图片20160108110417.png/>
【单选题】
设<img src=https://huaweicloudobs.ahjxjy.cn/C67CBDA727FEA56C7AB111CAB6F951AD.png title=QQ图片20160224215718.png alt=QQ图片20160224215718.png/>，则（ ）
①
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为极值点
②
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为驻点
③
<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>为连续点
④
<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/>有定义
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/D924FDFA6836DB9087586241A51B7EB4.png title=QQ图片20171102214052.png alt=QQ图片20171102214052.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/6F0F97D7E4AA975C3E7D26EB151AC0C9.png title=a.png alt=a.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/F0EF094474E8479A93104E6DA606E2A0.png title=b.png alt=b.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/2677B0279DE6957B1C7E7B3BCFD90154.png title=c.png alt=c.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/9306CD5DB93413CE9962E4224C39808C.png title=d.png alt=d.png/>
【单选题】
系列平面图例符号表示（ ）。<img src="20190822/1566461341144209.png" title="1566461341144209.png" alt="图片4.png"/>
①
单相单联二孔插座
②
三相单联四孔插座
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/EACBDB7AACB6CCFD57D69BB2531D09DE.png title=QQ图片20160108162109.png alt=QQ图片20160108162109.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/7C76BFCC5F8A393F2B935BDEA9D78EF1.png title=QQ图片20160108162120.png alt=QQ图片20160108162120.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/B96167ADDEFC695A4870459C2BF7897A.png title=QQ图片20160108162132.png alt=QQ图片20160108162132.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/7A9A01991C504EFCFA4FCF2560EA784F.png title=QQ图片20160108162144.png alt=QQ图片20160108162144.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/EFD05D802E5F910C608A613EC6336438.png title=QQ图片20160108162153.png alt=QQ图片20160108162153.png/>
