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【单选题】
用水稀释0.l 的醋酸溶液,下列说法正确的是
A.
醋酸的电离程度逐渐增大,溶液的PH值减小
B.
逐渐减小
C.
水的电离程度增大
D.
变大
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A.
多样性,创新性
B.
节奏性,生动性
C.
逻辑性,模仿性
D.
逻辑性,生动性
【单选题】The machinery had been wrecked so efficiently that the police were sure it was a case of___.
A.
vagabond
B.
sabotage
C.
paradox
D.
tachyon
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A.
正确
B.
错误
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A.
10年
B.
15年
C.
5年
D.
8年
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A.
强度高
B.
刚度大
C.
土层整齐美观
D.
稳定性好
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【单选题】The machinery had been wrecked so efficiently that police were sure it was a case of______ .
A.
vagaboned
B.
sabotage
C.
paradox
D.
tachyon
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