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【多选题】
可以进行酯化修饰的药物需含有的基团为A.
羧基
B.
酚羟基
C.
醇羟基
D.
氨基
E.
酰胺基
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举一反三
【单选题】Refer to Figure 2 . The change in total surplus in Nicaragua because of trade is
A.
$625, and this is an increase in total surplus
B.
$750, and this is an increase in total surplus
C.
$625, and this is a decrease in total surplus
D.
$750, and this is a decrease in total surplus
【单选题】Total surplus with a tax is equal to
A.
consumer surplus and producer surplus.
B.
consumer surplus minus producer surplus.
C.
consumer surplus, producer surplus, and total surplus.
D.
consumer surplus, producer surplus, and tax revenue.
【简答题】稳定蛋白质胶体的因素是____和水化膜。
【简答题】只有当保存按钮被点击时才传递meal,若要确定何时发生此情况,需要将保存按钮添加为____:
【单选题】What happens to the total surplus in a market when the government imposes a tax?
A.
Total surplus increases by the amount of the tax.
B.
Total surplus increases but by less than the amount of the tax.
C.
Total surplus decreases.
D.
Total surplus is unaffected by the tax.
【单选题】Total surplus in a market is
A.
the total cost to sellers of providing the good minus the total value of the good to buyers.
B.
the total value of the good to buyers minus the cost to sellers of providing the good.
C.
the difference between consumer surplus and sellers’ cost.
D.
always smaller than producer surplus.
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