【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/2D0C5E70ACEDCFC53115812831147538.png title=2.png alt=2.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】
设二次函数<img src="20190730/1564474534244319.png" title="1564474534244319.png" alt="图片61.png"/>满足<img src="20190730/1564474542129883.png" title="1564474542129883.png" alt="图片62.png"/>,则<img src="20190730/1564474585302811.png" title="1564474585302811.png" alt="图片63.png"/>的值为()
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/50B8AB3880EC4FD1901EE390ABF55B59.png title=2.png alt=2.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/5758B772498446FA82AC77D6D7F305E8.png title=2-1.png alt=2-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/B6454D5F78F647A4D82E69A2B2819675.png title=2-2.png alt=2-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/752DB2A405FFF9EE7DA06D85FB42F136.png title=2-3.png alt=2-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/CEF05144723A27B982B70DE56A618B07.png title=2-4.png alt=2-4.png/>
【单选题】
若<img src="20190808/1565257310871188.png" title="1565257310871188.png" alt="图片120.png"/>,则<img src="20190808/1565257320203294.png" title="1565257320203294.png" alt="图片121.png"/>为( )
【单选题】
下图所示结构的弯矩图形状应为( )。<img src=https://huaweicloudobs.ahjxjy.cn/FCEAB6F5F6EBD6D8859B6F68E8E7920A.png title=2.png alt=2.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/F8F1661FAAEF8E51F25191E56660E07B.png title=3.png alt=3.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/5CF87F063285D8F9C943A7A1C059DD98.png title=4.png alt=4.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/9C4BE8EBBB82949EFEAFE2991DE07FC4.png title=5.png alt=5.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/74DADDBFB7F9682A5A05BDA5F282EF23.png title=6.png alt=6.png/>
【多选题】
<img src=https://huaweicloudobs.ahjxjy.cn/56BAE75C41ED789808BD74BD796CD190.png title=2.png alt=2.png/><img src=https://huaweicloudobs.ahjxjy.cn/973224FF846365C9CC68773CF913D64F.png title=3.png alt=3.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/2A51130EF26AE0F98297A905C05B74F8.png title=4.png alt=4.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/C256C3ABBF7A188A41B8471B6219F2F2.png title=5.png alt=5.png/><img src=https://huaweicloudobs.ahjxjy.cn/8972CC284E4234178036DF0D9D89BE4C.png title=6.png alt=6.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/084E772FC80268CF0E71B3F81BC1E198.png title=7.png alt=7.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/CA50BCA13BA9CC8563FF22B6600E33CE.png title=8.png alt=8.png/>
【单选题】
已知向量img src=zzximg/20190809/1565318424536224.png title=1565318424536224.png alt=图片12.png/的长度为3,方向向东,向量img src=zzximg/20190809/1565318432803809.png title=1565318432803809.png alt=图片11.png/的长度为4,方向向北,则img src=zzximg/20190809/1565318416857876.png title=1565318416857876.png alt=图片10.png/等于( )
①
img class=kfformula src=zzximg/20190809/1565318471610307.png data-latex=5/
②
img class=kfformula src=zzximg/20190809/1565318471807250.png data-latex=7/
③
img class=kfformula src=zzximg/20190809/1565318471275858.png data-latex=11/
④
img class=kfformula src=zzximg/20190809/1565318471551260.png data-latex=\sqrt {73}/
【多选题】
<img src=https://huaweicloudobs.ahjxjy.cn/4DE29EFA21CB7D8D919C14C049187750.png title=1.png alt=1.png/><img src=https://huaweicloudobs.ahjxjy.cn/E85495858960DABC7D0670895F1502DC.png title=2.png alt=2.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/5329CCB367DC78F31026DD8A280B9DB7.png title=4.png alt=4.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/F0279F9E99540B5C6AD90E91695A90B0.png title=3.png alt=3.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/201DB0FD15C18B3A27CC64EEA281F911.png title=5.png alt=5.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/7EAB1F1D0550A6C5C24EEB0FFE8B0D00.png title=6.png alt=6.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/2E6C39A9A09597AD57A446FD6E31B3B2.png title=2.png alt=2.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/E4607BE5554DF3B9A9660F997F909DE7.png title=2-1.png alt=2-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/75DA33B0E9515DBA13C25CE536E822A8.png title=2-2.png alt=2-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/F25BC0EFD82E21FADEA1CB09B4D22BF1.png title=2-3.png alt=2-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/2BED7E83C050F5A9D352471AD9CC44B9.png title=2-4.png alt=2-4.png/>