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【推荐1】xy满足约束条件eqId311ae18d9e474f99a96026bf345612abeqId427c5564167644c6a23346f6d33931c1的最大值与最小值的比值为(   )
A. eqId30c998d35a344d80a18e14a8c8f2d14f                        B. eqIda80effaca10d48019e482c6443782838                       C. eqIdfca343da1efc413487359c1551da9dbe                         D. eqIdab7cb7cf6f374dca93e01c743e2fffba
难度系数:0.65使用:87次题型:单选题更新:2019/8/17
【推荐2】设实数eqIdc12aac8c2448479687a40735b3572a23eqId072d7d6b911b42bc89207e72515ebf5f满足不等式组eqIdfc30e25d4175426a93f7ad7153664508eqId2f3a60742f844b5d93956dc29836ed74的最小值是(  )
A. eqIdc052ddfbd4524f67a79e0e77c2e5656a                          B. eqId8898c1dc81824f3098bbeae74e8f11fd                           C. eqIdddd35c5d043e4ebeac32a99367053c68                          D. eqId8f65c930571d4ff6aa6a50029d46826e
难度系数:0.65使用:47次题型:单选题更新:2019/8/18
【推荐3】若实数eqIdc12aac8c2448479687a40735b3572a23eqId072d7d6b911b42bc89207e72515ebf5f满足不等式组eqId71b35bdea3714b3784aa322208086012eqId130920aab4664266ad6a4a22f4e654ba的最大值为(   )
A. eqId1d18010fc29e4f45abaaece953793246                        B. 2                             C. 5                             D. 7
难度系数:0.94使用:85次题型:单选题更新:2019/8/20
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