中学学科网 小学学科网 数字校园平台 组卷网 小学组卷网 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
题型:单选题 难度:0.94 组卷:260 更新时间:2019/07/25 11:52:43 题号:8398616
已知实数eqId8e15963708e9415da25069fea5906e24eqId072d7d6b911b42bc89207e72515ebf5feqId2cd9e2fe3d6540df9399dbefe49ada54,则下列命题正确的是(   )
A.若eqIdc5841ecde1d64523b035c9102f4104e8,则eqId0401dc819d444004bace87226df52702B.若eqIdb8bb672b651146c1897ebcf908773475,则eqId4b832ec996dc4e939d1c9bb8363d0caa
C.若eqId1a108a7177174920b1304f55109d7f90,则eqIdd1723ef37b00425c89fc59788ad4d8e1D.若eqIde86902af91e54c8cad8782e9f2460eba,则eqId1a108a7177174920b1304f55109d7f90

【知识点】

判断命题的真假 解读
类题推荐
【推荐1】下列说法中正确的是(   )
A.命题“若eqId5a1c2c1682004a97bd5b10f7f0592412,则eqId56df33c6dc354a5ea7cb1a90bc511496”的逆命题为真命题
B.若eqId687c5f9ab19b46218ebc9753093585db为假命题,则eqId4aba4a8775ac4d03b9f06e66b95b183f均为假命题
C.若eqIdc89abe1e4d584e16b3718409cb609213为假命题,则eqIdc5de25dfee824224a122b253f46a0d37为真命题
D.命题“若两个平面向量eqId4959a8a13c0b40f3a3b076626a4b616c满足eqId500f9b07872a4439ba43d74be8171b44,则eqId4959a8a13c0b40f3a3b076626a4b616c不共线”的否命题是真命题.
难度:0.85组卷:0题型:单选题更新:2020/4/4
【推荐2】设函数eqId4837c94ef0ff4dcf9b1dda4df363275a的定义域为eqId7dcd2312d0bf4bb1befdfcc170e45791,有下列三个命题:(1)若存在常数eqId2381423d4cd146cab95f55527681a766,使得对任意eqId6fc94f6e181444c6b809fb393eb8fae6,有eqIdb29123e50b3b47f3bdd04a8fd7ac464b,则eqId2381423d4cd146cab95f55527681a766是函数eqId4837c94ef0ff4dcf9b1dda4df363275a的最大值;(2)若存在eqIdbf7cd05efa8a477aa1b4de2ce1c174cb,使得对任意eqId6fc94f6e181444c6b809fb393eb8fae6,且eqId96b0a218d431489ba9d95ae6c68598b5,有eqId0dea0fbd8cab4447aa9a5f579e0ceb94,则eqId3d363adad62e4114b6a0829f1358cf63是函数eqId4837c94ef0ff4dcf9b1dda4df363275a的最大值;(3)若存在eqIdbf7cd05efa8a477aa1b4de2ce1c174cb,使得对任意eqId6fc94f6e181444c6b809fb393eb8fae6,有eqIdfa3f4f1743ab42feadf8b238de8f46f7,则eqId3d363adad62e4114b6a0829f1358cf63是函数eqId4837c94ef0ff4dcf9b1dda4df363275a的最大值;这些命题中,真命题的个数是(   )
A.0个B.1个C.2个D.3个
难度:0.85组卷:1题型:单选题更新:2020/4/1
【推荐3】下列说法中,正确的个数是(   )
①A=eqIde7d1c26d54ad46ceab47ce4cfcef8d21的子集有eqId8898c1dc81824f3098bbeae74e8f11fd个;
②命题“eqIdb62470f2d12a4dd99fcba689e8f5ae80”的否定是“eqId4a624446fdb8430294ea76d32ad63e63使得eqId4ef6e8aace53426bb94ac136ca3c1dce”;
③“eqId20a8afcf566e45fc930c7d265367b3a6”是“函数eqIdda5ae47584d741d9ac51ce7d3915b16d取得最大值”的充分不必要条件;
④根据对数定义,对数式eqId66874412b97c4524b78124a4afae704b化为指数式eqId028fa0a2baee42d687565d82c6b97013
⑤若eqId87589c936896428fba94a3843e350fe1,则eqId5bc09b7d9aac4b18969835fd1d0d1e39的取值范围为eqId013cc042ecc14c9bb263b94d66104f1a
eqIda1a1c520046d493e8d24c1d1ab0761d5.
A.eqId37705e1ef6a84bbdbe88433e75932cdfB.eqIdc052ddfbd4524f67a79e0e77c2e5656aC.eqId8898c1dc81824f3098bbeae74e8f11fdD.eqIdddd35c5d043e4ebeac32a99367053c68
难度:0.94组卷:11题型:单选题更新:2020/3/15