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更新:2019/8/22难度系数:0.94题型:填空题组卷:24次
已知等比数列eqId93e38ecd74a24cb59da79181b95bfd3a的前eqIdf458db68122849abb588feb2e682d9ac项和eqIddb5481de79c946c0a760143297d5eade ,若eqId89822fe0848c401396c29d2bf1157803eqIdc1e4d301eec54450bd5d8b768691ec82,则eqId3940a4b6a1e749e38a59fe57ef7e590c__________.
更新:2019/8/22难度系数:0.94题型:填空题组卷:21次
函数eqIdb0f3cf1512154ef0aa3840050e753120的最小正周期为__________.
更新:2019/8/22难度系数:0.94题型:填空题组卷:21次
已知三棱锥eqIda05cf829680e460f9f2ab31071f44695外接球的表面积为eqIdfceb10da8b63490dae4fdc016cf362d8eqId992fe44057cf4492895193f3f5398449是边长为1的等比三角形,且三棱锥eqIda05cf829680e460f9f2ab31071f44695的外接球的球心eqId2efda802d5534f6d92d9f8af7aaec28b恰好是eqId34c6b6e427744abfb88dc90b8c7c2111的中点,则三棱锥eqIda05cf829680e460f9f2ab31071f44695的体积为(  )
A. eqId5f51ce9cc7fe4412baeb871cceb26665                         B. eqId650bf73d6b904c6a9ee39b0dc18fea28                       C. eqId18c57999a18a435b8420e97c41639876                       D. eqIde0b8cd3018f64415bea8dce0a25d0538
更新:2019/8/22难度系数:0.65题型:单选题组卷:16次
已知函数eqIdec5a1be5828d4d8c91c310c0f8af696aeqIdf2b49e752dc54108b116c5815e0e5789上单调递减,则eqId70a27b6ddf6b478285353abb3b1f3741的取值范围是(  )
A. eqIdd98f39061f4b48ecb84bf3a0af985fee             B. eqIdb97f7e35a8f6485ab9ccf13bd93bfc93              C. eqId44eb449637d2469e8fb2bc361f96b1b9             D. eqId1cbb3c05f3d8459982e45ae7013f3de0
更新:2019/8/22难度系数:0.65题型:单选题组卷:36次
设圆eqId8009ba952e6e452cb22cfb9e2bb021f5eqIdc12aac8c2448479687a40735b3572a23轴和eqId072d7d6b911b42bc89207e72515ebf5f轴所得的弦分别为eqId99a3187c2b8f4bcc9703c74c3b72f1f3eqId34c6b6e427744abfb88dc90b8c7c2111,则四边形eqId5ce7a06ae7a34393b92b5277978ac014的面积是(   )
A. eqId2644c4fd7d684e75ae5ed93cb3581244                     B. eqId7bcd573cee334383ad72cc4b179fcfb3                      C. eqIdcb0b4d348f474513aaf4718b21559f01                      D. 8
更新:2019/8/22难度系数:0.94题型:单选题组卷:15次
已知向量eqIdc1d5ac9426ff487bb0a1564eef4eb849满足eqId42d749f380fe4f95a240f307a9dbf461,且eqIda7d83780cfce42039c6373809a942ecd,则eqIdbfdcb35337334952b6d7ceab2f7c8afd的夹角为(  )
A. eqIdb47bf79338b1478a89eac53d16970cdf                         B. eqIda21b55ef906e44cfb9b58adef59456de                        C. eqId2cb51764ae3949b9b698fc2f9527dff2                         D. eqId022e530e1dd6453ab54467745e9df0a8
更新:2019/8/22难度系数:0.94题型:单选题组卷:13次
在打击拐卖儿童犯罪的活动中,警方救获一名男孩,为了确定他的家乡,警方进行了调查:
知情人士A说,他可能是四川人,也可能是贵州人;
知情人士B说,他不可能是四川人;
知情人士C说,他肯定是四川人;
知情人士D说,他不是贵州人.
警方确定,只有一个人的话不可信.根据以上信息,警方可以确定这名男孩的家乡是(   )
A. 四川                                                         B. 贵州
C. 可能是四川,也可能是贵州                         D. 无法判断
更新:2019/8/22难度系数:0.94题型:单选题组卷:10次
已知eqId18f881d5c3a74219937d85c480f4cedb分别为四面体eqId5ce7a06ae7a34393b92b5277978ac014的棱eqIdb317fe13c23a4e4ca96949334adc7122上的点,且eqIdb7c353fb0f8649fa8ae7efa5bb535a6d,eqIdb9af865738084e9a8a05848fad64a293,eqId08f1da19c4064f0b80a92ed1ec004a71,eqId9597b41d5d074f97991432007fdc53c8,则下列说法错误的是(    )
A. eqIdeab31ea4bf424c0aa962761a307d5339平面eqId86070f774b844a779467ab22b6933976                                    B. eqId66242b244b2a4a52ad4fc29562c9ec03
C. 直线eqId43a5f04ea3f34f76a0366814f566a06a相交于同一点               D. eqId5eec415312f54333a3be2f307e1e66b9平面eqId709141c537664787b18fdbf3236dc7e6
更新:2019/8/22难度系数:0.65题型:单选题组卷:12次
eqId72b5e780fda74c3c8efe646c6ca4280ceqIdfc0b853ade0a46e6ab7f73bc1d001842eqIdab9b37c63a5e429a8d21f060da6a0dd4,则eqId0ce93bfa1f6a4a23b3258410dd19847a的大小关系为(  )
A. eqIdde23c9bee5f2497a98f967afa9b73a7a              B. eqIde20b3cdceb054975bbbb3a4598602baf                 C. eqId45615ef0900647268b98d1d5eeb28a58               D. eqId0d0cc8a6003c4e21bacd608a53c711cf
更新:2019/8/22难度系数:0.94题型:单选题组卷:49次
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