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常温下，有四种溶液： ① ② ③ ④ 0.1mol/L CH 3 COOH溶液 pH = 12 NaOH溶液 0.1mol/L NaOH溶液 pH = 2 CH 3 COOH溶液 下列说法不正确的是A.
①稀释到原来的10倍后，pH与④相同
B.
由水电离出的c(OH － )：①＞③
C.
②与④混合，若溶液显酸性，则所得溶液中离子浓度可能为： c(CH 3 COO － )＞c(H + )＞c(Na + )＞c(OH － )
D.
①与③混合，若溶液pH = 7，则两溶液体积关系为：V(NaOH)=V(CH 3 COOH)
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举一反三
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A.
reduced
B.
lessened
C.
decreased
D.
restricted
【单选题】A few people were killed in the fire, but _____ were saved. [ ]
A.
the most
B.
most of whom
C.
the majority of whom
D.
the majority
【单选题】The alarm signal for engine room catching fire is a blast of random bell followed by _____.
A.
two
B.
three knocks
C.
four knocks
D.
five knocks
【单选题】______ is reported in the newspaper, the big fire was finally put out with very few injuries.
A.
What
B.
That
C.
As
D.
It
【单选题】The alarm signal for engine room catching fire is a blast of random bell follow by ____.
A.
two knock
B.
three knocks
C.
four knocks
D.
five knocks
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