中学学科网组卷网 教评网 学易书城
e卷通介绍 使用手册 收藏本站 有奖挑错建议
高中语文综合库
展开
共计 388948道试题
+全部加入试卷
已知命题eqIdba8cf3586827496a852a2dad678dbd9c,命题eqIdaf72d029a9634d4aa01d746575befa59eqId0154112144a94fa2b8a8ce9e97e56f47,则eqId0c243e5dded24989821daf9bef2676a6成立是eqIda5d0fc594d4048549d5bbda484fbecc8成立的( )
A.充分不必要条件B.必要不充分条件
C.充要条件D.既不充分也不必要条件
更新:2019/8/11难度系数:0.65题型:单选题组卷:367次
已知实数eqId7325f59d822c4c318b79153587a4f903满足不等式eqId2a865e4098534dcdada77a1bf87cd83beqId53579c942ece48a291596c18ca15f13a的最小值为( )
A.eqId4e2a05e4ed5345bfa9b26d9fbd866b59B.5C.4D.无最小值
更新:2019/8/11难度系数:0.65题型:单选题组卷:88次
已知eqId5270d464ef0b4a94ad10014657a4921d.
(1)求不等式eqId034658758cff493494215e70d837b734的解集;
(2)若eqId6709283711bf4ae39fde99d031d3bb28eqId10882e1542f2423e84558c11204b02be恒成立,求eqId3a4208e0040c42ed8b09de2cae9d562e的取值范围.
更新:2019/8/22难度系数:0.65题型:解答题组卷:24次
在直角坐标系eqId2272a344734c4fb088737b84294f7219中,曲线eqId19a4eb16029e4550a14f2afe4741a3c3的参数方程为eqId27fcdccc870641d5837e6b9e12d4423feqIdf9db0aee08264a238b9741675591065e为参数),以坐标原点为极点,eqIdc12aac8c2448479687a40735b3572a23轴正半轴为极轴建立极坐标系,直线eqId417e80f1349244878d01fe90e0891f5f的极坐标方程为eqIdbd1ffe871e9c4c6d8e22820726cd757c.
(1)求eqId19a4eb16029e4550a14f2afe4741a3c3eqId417e80f1349244878d01fe90e0891f5f的直角坐标方程;
(2)已知直线eqId417e80f1349244878d01fe90e0891f5feqId072d7d6b911b42bc89207e72515ebf5f轴交于点eqId2381423d4cd146cab95f55527681a766,且与曲线eqId19a4eb16029e4550a14f2afe4741a3c3交于eqIdeb53cb7cb0274f7d8f111c60f824c243两点,求eqId940ef732870542c295cd1062b681319c的值.
更新:2019/8/22难度系数:0.65题型:解答题组卷:35次
已知函数eqId9af1bdfc889a4f81a0479e2faf2936b1.
(1)若eqIdc65c99cdd6c04cfe85048bbb17bee998,求曲线eqId144eff5c0e4649138a21f2b1b6a06907eqId5db4a4f976ba42089c0439595abeb40b处的切线方程;
(2)若函数eqId6f13759e937144069819aed2ae5a1057eqId778e518fc215448791c374746f687151上的最小值为eqId5f9c67d949d5423687994106ee998863,求eqId3a4208e0040c42ed8b09de2cae9d562e的值.
更新:2019/8/22难度系数:0.65题型:解答题组卷:38次
已知eqId5f04473e64c141bcbe9b0a8af27f4aa8分别为椭圆eqId211c15b061ee47039dccbca908ea32b4的左右焦点,上顶点为eqId2381423d4cd146cab95f55527681a766,且eqId2d14392ed2e34174825471b70b386c7f的周长为eqId0915ae7ebd6c4c6680ec9535c6d93c5e,且长轴长为4.
(1)求椭圆eqId19a4eb16029e4550a14f2afe4741a3c3的方程;
(2)已知eqIdd105234394ef41989e2184b18f2075c0,若直线eqIdde0d83bbc90548eca9611fe12a8682cb与椭圆eqId19a4eb16029e4550a14f2afe4741a3c3交于eqIdeb53cb7cb0274f7d8f111c60f824c243两点,求eqId1ff88d9353a0460e9e7c66d079e173da.
更新:2019/8/22难度系数:0.65题型:解答题组卷:29次
为了研究广大市民对共享单车的使用情况,某公司在我市随机抽取了100名用户进行调查,得到如下数据:
每周使用次数
1次
2次
3次
4次
5次
6次及以上

4
3
3
7
8
30

6
5
4
4
6
20
合计
10
8
7
11
14
50
 
认为每周使用超过3次的用户为“喜欢骑共享单车”.
(1)分别估算男、女“喜欢骑共享单车”的概率;
(2)请完成下面的2×2列联表,并判断能否有95%把握,认为是否“喜欢骑共享单车”与性别有关.
 
不喜欢骑共享单车
喜欢骑共享单车
合计

 
 
 

 
 
 
合计
 
 
 
 
附表及公式:eqId8b9d5e20d1a6451eb1ca7120145cefeb,其中eqId754c3c713caf47498134c63776d19032.
eqIda8736725d062427589bc83a21a3cee45
0.15
0.10
0.05
0.025
0.010
0.005
0.001
eqIdaf3c3fd2a9a145b49b01d055c2cb8379
2.072
2.706
3.841
5.024
6.635
7.879
10.828
 
更新:2019/8/22难度系数:0.65题型:解答题组卷:10次
如图,在四棱锥eqIdac097205e9cb41279269aadcac3fb6f1中,底面eqId5ce7a06ae7a34393b92b5277978ac014是直角梯形,且eqIdeec1827a5d2841888521a9471977822deqIdeecb96c84ba340069d573f6c1caefbbbeqId4f1b3aedcfa44aa7a011454397e994b8eqIddb074474bc334e099d5c47fb2d65d4e2eqIdbd7cedfb6bbe492c8e080c0c81ad5874eqIdfa5894e87dff486492b42c3d091121aeeqId89103af01bd04d5b8b5e3db76481adc9.
figure
(1)证明:eqIde78cce043a6c43329b55788351ff3484平面eqId5ce7a06ae7a34393b92b5277978ac014
(2)求四棱锥eqIdac097205e9cb41279269aadcac3fb6f1的体积.
更新:2019/8/22难度系数:0.65题型:解答题组卷:31次
eqId992fe44057cf4492895193f3f5398449中,角eqId10bbe48f886a4fa78fdf8c1fd064f9b4的对边分别为eqId0ce93bfa1f6a4a23b3258410dd19847aeqId5d5aee014bcd4e94885784812194ecd8.
(1)求eqIdcc614bd3390c4d028df189b234dcc351
(2)若eqId5cedc65a5f6d4634b77c516887d9742feqIdba00dd4af19048d7a97e6f1a3882db2b,求eqId992fe44057cf4492895193f3f5398449的周长.
更新:2019/8/22难度系数:0.65题型:解答题组卷:32次
eqId5f04473e64c141bcbe9b0a8af27f4aa8分别为双曲线eqIdceed1a7797e443d9abdce2f0c8179d8e的左右焦点,过eqId0aa72756ed0c4c7a89f26aa94f43e47d的直线交双曲线eqId19a4eb16029e4550a14f2afe4741a3c3左支于eqIdeb53cb7cb0274f7d8f111c60f824c243两点,且eqIddf2d28dc9f4e4d009afde927841eb332eqId4840bf2c99c5443d9b59d38cc4926b0aeqId637d6b2c66824de280f949499892c43f,则双曲线eqId19a4eb16029e4550a14f2afe4741a3c3的离心率为__________.
更新:2019/8/22难度系数:0.65题型:填空题组卷:21次
关注官方微信