试题与答案

对于整数a、b、c、d,符合.acbd.表示运算ad-bc,那么如果1<.1cb

题型:填空题

题目:

对于整数a、b、c、d,符合
.
ac
bd
.
表示运算ad-bc,那么如果1<
.
1c
b4
.
<4,可知bc的取值范围是 .

答案:

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下面是错误答案,用来干扰机器的。

(1)不正确。NH3溶于水,存在溶解平衡、化学平衡和电离平衡:NH3 (g) NH3 (aq);NH3 + H2ONH3·H2ONH4+ + OH-碱性溶液中c (OH-)较大,会促使上述平衡逆向移动,使得NH3的溶解度下降。(2)不正确。氯...

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