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【多选题】
通用航空的分类包括?
A.
工业航空
B.
农林业航空
C.
观光旅游
D.
培训体育
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参考答案:
举一反三
【单选题】铅及无机化合物进入人体的主要途径是
A.
皮肤
B.
皮肤和呼吸道
C.
呼吸道
D.
皮肤和消化道
E.
以上都不是
【多选题】When reducing output from the competitive level lowers welfare,
A.
producer surplus is lower
B.
consumer surplus is lower
C.
a deadweight loss is generated
D.
social welfare is higher
【单选题】铅及其无机化合物进入人体的主要途径是
A.
皮肤
B.
血液
C.
消化道
D.
呼吸道
E.
皮肤和消化道
【简答题】When machine time is a binding constraint on production output, which one of the following will have noeffect on the throughput accounting ratio for a product that the machine is used to manufacture?A...
【单选题】在工业生产中,铅及其化合物进入人体的主要途径是( )。
A.
经呼吸道进入
B.
经皮肤侵入
C.
随吸烟吸入
D.
随消化道摄人
E.
随饮水饮入
【单选题】铅及无机化合物进入人体的主要途径是
A.
皮肤
B.
皮肤和呼吸道
C.
呼吸道
D.
皮肤和消化道
【单选题】When countries specialize according to their comparative advantage,
A.
it is possible to increase world output of all goods.
B.
it is possible to increase world output of some goods only by reducing the output of others.
C.
one country is likely to gain from trade while others lose.
D.
all countries will lose from trade.
【单选题】铅及无机化合物进入人体的主要途径是
A.
皮肤
B.
呼吸道
C.
皮肤和呼吸道
D.
皮肤和消化道
E.
呼吸道和消化道
【单选题】According to the theory of comparative advantage, countries gain from trade because
A.
Trade makes firms behave more competitively, reducing their market power.
B.
All firms can take advantage of cheap labor.
C.
Output per worker in each firm increases.
D.
World output can rise when each country specializes in what its does relatively best.
【单选题】When machine time is a binding constraint on production output,which one of the following will have no effect on the throughput accounting ratio for a product that the machine is used to manufacture
A.
Obtaining a lower purchase price for materials for the product
B.
Reducing factory costs
C.
Increasing the selling price of the product
D.
None of the above
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