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【单选题】
吸附指示剂法，加入糊精或淀粉的作用是：A.
防止AgX胶态沉淀转化;
B.
防止AgX胶态沉淀见光分解
C.
滴定前，防止AgX胶态沉淀与指示剂接触
D.
防止AgX胶态沉淀的凝聚
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皮皮学刷刷变学霸
举一反三
【单选题】The earth is about as the moon.
A.
as fifty time big
B.
fifty times as big
C.
as big fifty times
D.
fifty as times as
【单选题】The Earth is about as the moon.
A.
as forty-nine time big
B.
forty-nine times as big
C.
as big forty-nine times
D.
forty-nine as times big
【简答题】阅读理解。 The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we hav...
【简答题】氧化作用和磷酸化作用相偶连的部位是
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