【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/102CB5BC5336EEAD00ABF32604394DD2.png title=1.png alt=1.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/1CEC70069CF557FD191B3E7FCA851613.png title=1-1.png alt=1-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/90AA028970BD00AEE535AC4E376FF013.png title=1-2.png alt=1-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/BC5D05121D47200FBEF5252DDBCC4E88.png title=1-3.png alt=1-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/073A72D320185E0B4A48EDD6FCDB0317.png title=1-4.png alt=1-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/0266B89B8851BDBEBCCF830B89FF4190.png title=1.png alt=1.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/501626B89F7C71A643BDD881DDAAEEC1.png title=1-1.png alt=1-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/5FDA550CF009A67F17EC97C8DD411FE1.png title=1-2.png alt=1-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/DE6EC83EF49D95B3554D1C115D709D85.png title=1-3.png alt=1-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/EBCF1D81F8932428D3055EE7514CE5A7.png title=1-4.png alt=1-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/2FA1045D2123351952CC0946F93733D0.png title=1.png alt=1.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/4862F20A4109B7A518A53B21F7820BAD.png title=a.png alt=a.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/336B63EFC2F3D1BBBC1B2E85C6063FA6.png title=b.png alt=b.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/4078C105A9E114B35668C39CFAEAF252.png title=c.png alt=c.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/4F2F959A7F0AEBB4DBEA437F4A64AEF2.png title=d.png alt=d.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/BA525950E77C8BF04111E8E508939288.png title=1.png alt=1.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/AC37C93BBC9A75279B058A188A1ADBCB.png title=1-1.png alt=1-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/137EFF82679D14ACC25A078C00F0EF64.png title=1-2.png alt=1-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/36639CA3B6CCBDDD55A9CD5DA9D13EED.png title=1-3.png alt=1-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/49979B3820EA1098B18F92E67123F117.png title=1-4.png alt=1-4.png/>
【单选题】
已知向量<img src="20190809/1565318424536224.png" title="1565318424536224.png" alt="图片12.png"/>的长度为3，方向向东，向量<img src="20190809/1565318432803809.png" title="1565318432803809.png" alt="图片11.png"/>的长度为4，方向向北，则<img src="20190809/1565318416857876.png" title="1565318416857876.png" alt="图片10.png"/>等于( )
①
<img class="kfformula" src="20190809/1565318471610307.png" data-latex="5"/>
②
<img class="kfformula" src="20190809/1565318471807250.png" data-latex="7"/>
③
<img class="kfformula" src="20190809/1565318471275858.png" data-latex="11"/>
④
<img class="kfformula" src="20190809/1565318471551260.png" data-latex="\sqrt {73}"/>
【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="20190730/1564475370927962.png" title="1564475370927962.png" alt="图片83.png"/>等于（）
①
<img class="kfformula" src="20190730/1564475500417727.png" data-latex="-\frac {1} {5}" width="95" height="53"/>
②
<img class="kfformula" src="20190730/1564475432374250.png" data-latex="5"/>
③
<img class="kfformula" src="20190730/1564475432591960.png" data-latex="\frac {1} {5}" width="66" height="53"/>
④
<img class="kfformula" src="20190730/1564475432400386.png" data-latex="-5"/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/34BFE59D54905F30E206325B4732F369.png title=1.png alt=1.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/71909EB0127320F91108F08DEDD4646E.png title=1-1.png alt=1-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/7830B3E2C69936B638B02967CEB71B0A.png title=1-2.png alt=1-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/F2D351030D3A9A335A37D38C5AD0EBCF.png title=1-3.png alt=1-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/DF3967A1981427675062A9A750CF3079.png title=1-4.png alt=1-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/7213181E534E39712D5D13960C670F64.png title=1.png alt=1.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/9075AA93AE5FB00E9C4E66CB75870487.png title=1-1.png alt=1-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/73BC347939B298BFB753511F23809DD8.png title=1-2.png alt=1-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/279D9F4FDAF992EEC4E48F99133E1CE7.png title=1-3.png alt=1-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/85A39A5B48A1ACBA7AAD3F47717A63D0.png title=1-4.png alt=1-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/3810BC5707BA43311C611A00B4ED412F.png title=1.png alt=1.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/21B1C9B740BCEF1A231A7F0C889ADE93.png title=1-1.png alt=1-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/C2E147E2701C618344A10E609FA0C334.png title=1-2.png alt=1-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/9AAC724C6B781702675649F3437F3E6A.png title=1-3.png alt=1-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/85232087C2D3E7209D767575A09C9E95.png title=1-4.png alt=1-4.png/>
