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甘肃省兰州市第一中学2019-2020学年高三上学期9月月考数学(文)试题
适用年级:高三 试卷类型:月考 试题总数:22 浏览次数:808 上传日期:2019-10-21
1 . 已知集合A={x|y=lg(x-eqId7f689151576b4101bb4b8231f0534923)},B={x|eqId7f689151576b4101bb4b8231f0534923-cx<0,c>0},若A⊆B,则实数c的取值范围是(  )
A.(0,1]B.[1,+∞)
C.(0,1)D.(1,+∞)
更新:2018/12/18难度:0.65题型:单选题组卷:617
2 . 若复数eqId2cd9e2fe3d6540df9399dbefe49ada54满足eqIdd52483325d894e3d9ca313c8be3a1d71,则eqIdd97c066590474beb8b6a5abd6461c259的虚部为(  )
A.eqId3732ca6f8c044c11a1e2797dcda893dbB.eqId2b4cdf753a8746efb449b3005ed03f26C.eqId170361f2c13a48679439924a405d8282D.eqIdcabefb07521f4b8180a5587da47819df
更新:2020/06/23难度:0.85题型:单选题组卷:1201
3 . 若eqIdb9dee5278b614d79b1fa57fb075c7113eqIde531588f1f074760b0460a4aacec53fb,且eqId7c0f195b69574031a80802ad8c931f28,则向量eqId35b238e5e324411599801cfc592ee01e的夹角为()
A.45°B.60°C.120°D.135°
更新:2020/04/07难度:0.94题型:单选题组卷:1732