沉淀CaCO3时，酸度通常控制在pH>5，这是利用( )
A. 盐效应
B. 水解效应
C. 酸效应
D. 同离子效应
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当 Na2SO4的浓度超过0.04mol/L后，PbSO4在其中溶解度随Na2SO4的增大而增大，此时占主导地位的是( )
A. 盐效应
B. 同离子效应
C. 酸效应
D. 配位效应
AgCl 的溶解度在氯离子浓度超过1×10-3 mol/L后，随氯离子浓度的增大而增大，此时占主导地位的是（ ）
A. 盐效应
B. 同离子效应
C. 酸效应
D. 配位效应
In the second paragraph, “remove” means
A. move
B. get rid of
C. move again
D. motion
How can cold showers provide a helpful assist in your weight loss plan?
A. Brown fat is to produce heat to keep your body warm.
B. White fat tends to accumulate at your waist, lower back, neck and legs.
Cold temperatures increased the metabolic rate of brown fat, which helps a person reduce weight.
D. White fat is the body fat we all know and struggle to get rid of.
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