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【多选题】
下列属于影响液-固界面吸着作用的因素为A.
元素存在形式
B.
有机物络合效应
C.
盐度
D.
pH
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【简答题】My father sometimes_____(go) to the park after work.
【简答题】原电池的写法，习惯上把 [填空(1)] 极写在右边。A. 正
【简答题】原电池的写法,习惯上把(_)极写在左边,(_)极写在右边。
【简答题】原电池的写法，习惯上把 [填空(1)] 极写在左边。A. 负
【简答题】阅读理解 My name is Liu Ying. Now, I want to say something about my father. My father is a doctor. He works in a children's hospital. I don't know much about his work. I just know he is very busy every da...
【单选题】下列表达正确的是()。
A.
低频信号可直接从天线有效地辐射
B.
低频信号必须装载到高频信号上才能从天线有效地辐射
C.
高频信号及低频信号都不能从天线上有效地辐射
D.
高频信号及低频信号都能从天线有效地辐射
【简答题】My name is Han Mei．Now I want to say something about my father．My father is a doctor. He works in a children’s hospital.I don’t know much about his work. I just know he is very busy every day．He works...
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