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【单选题】
下列情况不能造成柴油发电机润滑油压过高的原因是()。
A.
机油泵严重磨损,泵油量不足
B.
安全阀关闭不严或开启压力过低,长期使部分机油不经过滤清器即进入主油道,增加主油道的油量油压
C.
机油粘度过大
D.
限压阀或调压阀弹簧预紧力过大或阀门卡死,使机油泵出油压力过高
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举一反三
【判断题】两点法绘制圆是指通过制定两个点,并以两点间的距离为半径绘制圆( )。
A.
正确
B.
错误
【单选题】Which of the following is a government payment to help a domestic business compete with foreign firms?
A.
revenue tariff
B.
protectionist tariff
C.
import buy-back
D.
export rebate
E.
subsidy
【判断题】两点法绘制圆是指通过指定两个点,并以两个点的距离的半径绘制圆
A.
正确
B.
错误
【单选题】Average cost regulation of a natural monopoly:
A.
generates economic losses for the seller.
B.
necessitates a subsidy payment to the firm.
C.
creates incentives that tend to shift ATC curves in an upward direction.
D.
imposes a price that is less than marginal cost.
【判断题】Export subsidy is a payment by a government to an industry that leads to an expansion of exports by that industry and it used not only in developed countries but also in developing countries.
A.
正确
B.
错误
【单选题】Which of the following is a government payment to help a domestic business compete with foreign firms?
A.
subsidy
B.
revenue tariff
C.
protectionist tariff
【判断题】两点法绘制圆是指通过指定两个点,并以两点间的距离为半径绘制圆
A.
正确
B.
错误
【单选题】Subsidy is a payment made by the government to producers of a good or service, which is intended to _________________their costs.
A.
change
B.
raise
C.
lower
D.
balance
【单选题】An export subsidy is
A.
a limit on the quantity of a good or service that can be sold abroad.
B.
a payment made to a foreign government in return for preferential trade treatment.
C.
a payment to a firm or individual that ships a good abroad.
D.
illegal in the U.S. but is fairly common in the rest of the world.
E.
a fee that is charged to a country that ships goods to the U.S.
【单选题】Marginal cost regulation of a natural monopoly:
A.
generates economic losses for the seller.
B.
necessitates a subsidy payment to the firm.
C.
imposes a price that is less than average total cost.
D.
is characterized by all of the above.
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