下列有关电解质溶液的说法正确的是

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下列有关电解质溶液的说法正确的是（）

A：分别测等浓度的醋酸和氨水pH，发现二者的pH 之和为14，说明常温下醋酸和氨水的电离平衡常数相等

B：将CH₃COONa溶液从25℃升温至 40℃，溶液中 $\frac{c (C H_{3} C O O^{-})}{c (C H_{3} C O O H) \cdot c (O H^{-})}$ 增大

C：向硝酸中加入氨水至中性，溶液中 $\frac{c (N H_{4}^{+})}{c (N O_{3}^{-})}$ ＜1

D：向AgCl、AgBr 的饱和溶液中加入少量 AgNO₃，溶液中 $\frac{c (C l^{-})}{c (B r^{-})}$ 增大

上一题下一题 0.0难度选择题更新时间:2017-07-22 06:54:38

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A

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There was once a lonely girl who wanted love very much．One day while she was walking in the forest，she found two birds．She took them home and put them in a small1．She was happy to have two“friends”．She2them with love and the birds grew strong．One day the girl forgot to close the door of the cage．The 3of the two flew out of the cage．The girl was afraid that it would fly away．She caught it quickly．She felt glad that she caught the bird before it could fly away．Suddenly she couldn’t4a sound from the bird．When she opened her hand，the bird was already（已经）dead．Her5killed(杀死)the bird! Then she saw6bird jumping up and down7the cage．She could feel its great need for freedom．It wanted to fly into the blue sky．So she let it fly away8．The bird circled(转圈)once，twice，and three times．The girl9as the bird flew．She didn’t care about losing the bird any more．She wanted it to be happy．Suddenly the bird flew closer and landed softly on her shoulder．It sang the10song she had ever heard(她所听过的)．
The fastest way to lose love is to hold it too tightly，and the best way to keep love is to give it wings．

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