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搜题
【单选题】
下列几种症状和现象中,对家禽维生素A缺乏诊断意义最大的是( )A.
皮炎
B.
夜盲
C.
头向后仰呈“观星状"
D.
滑脏症
E.
干眼病
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【简答题】Calculate the social welfare under perfect competition. Compared with perfect competition, calculate the dead weight loss under the Cournot competition?
【单选题】Which of the following is not true in the long run under perfect competition?
A.
There is no incentive for firms to enter or exit the industry.
B.
Economic profit is zero.
C.
Long-run marginal cost is minimized.
D.
Long-run average total cost is minimized.
【单选题】The bike under the tree ________ belong to Hilary. Look! Her bag is on it.
A.
must
B.
shall
C.
will
D.
Can
【单选题】Under perfect capital mobility and fixed exchange rates, expansionary _____ is especially effective because the _____.
A.
fiscal policy; LM curve effectively is vertical.
B.
monetary policy; LM curve effectively is the same as the FE curve.
C.
fiscal policy; interest rate does not change.
D.
monetary policy; interest rate does not change.
【单选题】In long-run equilibrium under perfect competition
A.
price will equal minimum average fixed cost.
B.
firms will earn economic profits due to the existence of barriers to entry.
C.
the demand curve facing individual firms will fall to the level tangent to the minimum average total cost curve.
D.
firms will produce at the level of output where marginal revenue exceeds marginal cost by the greatest dollar amount.
【单选题】Under what condition can you apply future perfect?
A.
future events which are fixed and can be confirmed
B.
something will end by a certain time
C.
the event has not been known
D.
the event which takes place in our lives so often
【单选题】Where are the basketballs?
A.
On the table．
B.
Behind the door．
C.
Under the table．
D.
In the． drawer．
【简答题】请阅读资料栏里的“GB/T 15834-2011 标点符号用法.pdf”,并写写自己的感受(例如:关于标点符号的定义及其用法,通过本次阅读了解到哪些在未阅读前不知道的,或者自己经常犯的错误,以及本次阅读对后续应用文写作的帮助等)。
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