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【单选题】
The class of drugs called statins have proved very effective against hypercholesterolemia, a major cause of atherosclerosis and associated cardiovascular disease. These drugs reduce plasma cholesterol levels by:A.
Preventing absorption of cholesterol from the intestine.
B.
Increasing the excretion of cholesterol from the body via conversion to bile acids.
C.
Inhibiting the conversion of 3-hydroxy-3-methylglutaryl-CoA to mevalonate in the pathway for cholesterol biosynthesis.
D.
Increasing the rate of degradation of 3-hydroxy-3-methylglutaryl CoA reductase.
E.
Stimulating the activity of the LDL receptor in the liver.
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【单选题】A problem encountered when implementing an "infant industry" tariff is that
A.
domestic consumers will purchase the foreign good regardless of the tariff.
B.
the industry may never "mature."
C.
most industries require tariff protection when they are mature.
D.
the tariff may hurt the industry's domestic sales.
E.
the tariffs fail to protect the domestic producers.
【单选题】保险保障的水平取决于保险双方当事人的权利和义务，即保险的补偿或给付水平要根据损失情况而定；同时，还必须考虑的因素是（ ）
A.
被保险人的保险需求
B.
受益人的保险需求
C.
保险人的资本实力
D.
投保人的交费水平
【单选题】A problem encountered when implementing an "infant industry" tariff is that ___________.
A.
domestic consumers will purchase the foreign good regardless of the tariff.
B.
the industry may never "mature."
C.
most industries require tariff protection when they are mature.
D.
the tariff may hurt the industry's domestic sales.
【单选题】New entrants to an industry are more likely when
A.
it is difficult to gain access to distribution channels.
B.
economies of scale in the industry are high.
C.
product differentiation in the industry is low.
D.
capital requirements in the industry are high.
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