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【简答题】
计算不同浓度的氨溶液的 OH- 浓度和解离度。 (1)当溶液越稀时,怎样影响解离度?怎样影响 OH- 浓度? 两种答案是否矛盾?请解释。
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【单选题】Which is , the sun, the moon or the earth? [ ]
A.
big
B.
biggest
C.
the biggest
D.
bigger
【单选题】To Karen Wright, what is the biggest problem ?
A.
The biggest problem is a lack of work.
B.
The biggest problem is a lack of skilled workers.
C.
The biggest problem is a lack of CEO.
【单选题】Shanghai is one of ______ cities in the world. [ ]
A.
big
B.
bigger
C.
biggest
D.
the biggest
【简答题】按分子式写出聚合物和单体名称以及聚合反应式。属于加聚、缩聚还是开环聚合,连锁聚合还是逐步聚合?
【单选题】What is Wright’s biggest problem?
A.
His biggest problem is a lack of money
B.
His biggest problem is a lack of skilled workers.
C.
His biggest problem is a lack of time.
D.
His biggest problem is a lack of food.
【单选题】Which is ______, the basketball, the soccer ball or the tennis?
A.
bigger
B.
biggest
C.
the biggest
【单选题】China is the biggest _____ country, while the U.S.A is the biggest ____ country.A．developed; dev
A.
99. China is the biggest _____ country, while the U.S.A is the biggest ____ country. A．developed; developed
B.
developing; developed
C.
developing; developing
D.
developed; developing
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