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第16～25小题，要求判断每题给出的条件(1)和(2)能否充分支持题干所陈述的结论．A、B、C、D、E五个选项为判断结果，请选择一项符合试题要求的判断．A．条件(1)充分，但条件(2)不充分． B．条件(2)充分，但条件(1)不充分． C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． D．条件(1)充分，条件(2)也充分． E．条件(1)和(2)单独都不充分，条件(1)和条件(2)联合起来也不充分． 方程有解． (1) a≤0 (2) 0＜a＜10
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第16～25小题，要求判断每题给出的条件(1)和(2)能否充分支持题干所陈述的结论．A、B、C、D、E五个选项为判断结果，请选择一项符合试题要求的判断．A．条件(1)充分，但条件(2)不充分． B．条件(2)充分，但条件(1)不充分． C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． D．条件(1)充分，条件(2)也充分． E．条件(1)和(2)单独都不充分，条件(1)和条件(2)联合起来也不充分． 已知正数a，b，c成等比数列，则公比q=2． (1) 2ax2-3bx+c＜0的解集为1＜x＜2． (2)
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