【单选题】
下列函数中，在<img src="20190730/1564473949495175.png" title="1564473949495175.png" alt="图片46.png"/>内是减函数的为( )
①
<img src="20190730/1564474090983745.png" title="1564474090983745.png" alt="图片50.png"/>
②
<img src="20190730/1564474069714722.png" title="1564474069714722.png" alt="图片51.png"/>
③
<img src="20190730/1564473984807752.png" title="1564473984807752.png" alt="图片47.png"/>
④
<img src="20190730/1564474084192474.png" title="1564474084192474.png" alt="图片49.png"/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/C7FA5D76EB618FFD2DCC5AF5656CA339.png title=5.png alt=5.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/4DA6A024ECEF6E488E0A3FC173D4ED11.png title=5-1.png alt=5-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/AF65C3DBC1C721D2EEE270CAEA647AB0.png title=5-2.png alt=5-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/79C33E11F23864A82285C49A893A6AF7.png title=5-3.png alt=5-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/D3C1C5340AE47F19FD8D627BD2C7DB73.png title=5-4.png alt=5-4.png/>
【单选题】
原点到直线<img src="20190809/1565320065373579.png" title="1565320065373579.png" alt="图片21.png"/>的距离为3，则m的值为（ ）
①
5
②
15
③
-15
④
±15
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/39B705DC1BC56145F45BFECCC7D433A9.png title=5.png alt=5.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/B395DBCFEBDBD974BA617134A16BF33A.png title=5-1.png alt=5-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/C2FD6FF299C5B0EFF5B38AD2726DA375.png title=5-2.png alt=5-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/A5E67A87512E3CBDE934C9D4C16A14CB.png title=5-3.png alt=5-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/53A4A60F7394257951C32F0862525EBE.png title=5-4.png alt=5-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/D49A6E0FCE91287AE62127DC658ED2EA.png title=5.png alt=5.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/2FC450F819817E12164A3F862A6C84A1.png title=5-1.png alt=5-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/D1CE8020AC78118915B63A79301B9DB3.png title=5-2.png alt=5-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/96543A458C48D042740F5AE53E8AC744.png title=5-3.png alt=5-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/E4EC8532C7AD0EF2A992B4E5DF47857E.png title=5-4.png alt=5-4.png/>
【单选题】
<img src="20190730/1564475140766082.png" title="1564475140766082.png" alt="图片78.png"/>的根式形式是（ ）
①
<img src="20190730/1564475169828406.png" title="1564475169828406.png" alt="图片79.png"/>
②
<img src="20190730/1564475177512856.png" title="1564475177512856.png" alt="图片80.png"/>
③
<img src="20190730/1564475188199139.png" title="1564475188199139.png" alt="图片82.png"/>
④
<img src="20190730/1564475183568179.png" title="1564475183568179.png" alt="图片81.png"/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/ED225128D4FE8EEDD3BFF96CB818AB34.png title=5.png alt=5.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/39287B6D50327F38496AC7C7046A4409.png title=5-1.png alt=5-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/766EFE0CBA12CD369837E07077C01D13.png title=5-2.png alt=5-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/2F4D89FDE69CC78E31F9835E26664336.png title=5-3.png alt=5-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/DDBE958C8D336C51571FC8A683B04A79.png title=5-4.png alt=5-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/78049A7D913CA14E0509BA1F57D63269.png title=5.png alt=5.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/6422F033B260E72D625638177714B911.png title=5-1.png alt=5-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/EC59F3A6D9E2DFEC1BC4D20A0C5CA9D2.png title=5-2.png alt=5-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/2204058F4EAF0DA3CA104AFEEF6E28F8.png title=5-3.png alt=5-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/490003B0B7E44DA9DCA2AA8D52BF2947.png title=5-4.png alt=5-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/EEAE8C631093A1A174CCAD7D92D1BE3D.png title=5.png alt=5.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/7BF9B9A43C9C06D34663A426EF3C6640.png title=5-1.png alt=5-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/689C66296C07AD16D1C90721390FBD6D.png title=5-2.png alt=5-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/4813F41B3EE105C15D8FAE53869F09F3.png title=5-3.png alt=5-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/79FF62A09E5971ADE76E1A930600E791.png title=5-4.png alt=5-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/4B930D57827F5A7F93C085282B5A04C2.png title=5.png alt=5.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/48D6719B7734A93DE6292129338A3CA5.png title=5-1.png alt=5-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/48AA6D7BB818C7DC17C07294D2419DB0.png title=5-2.png alt=5-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/6B7E4A2E27FEBFF63468755E016B2A66.png title=5-3.png alt=5-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/20C2EA782ED82AA925442EB081194764.png title=5-4.png alt=5-4.png/>
