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【判断题】
坐标原点位于参考椭球中心的坐标系统称为地心坐标系。A.
正确
B.
错误
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【单选题】A firm has the long-run cost function C(q) = 7q2 + 175. In the long run, it will supply a positive amount of output, so long as the price is greater than
A.
$70
B.
$148
C.
$35
D.
$75
【单选题】Every time Ashtita tries to break a record, he reaches a point ______ he feels he cannot physically do any more．
A.
where
B.
that
C.
when
D.
which
【单选题】A firm has the long run cost function C(Q) = 5Q 2 + 245. In the long run, it will supply a positive amount of output, so long as the price is greater than:
A.
140
B.
148
C.
35
D.
70
E.
75
【单选题】In a monopoly in the long run:
A.
economic profits will be eliminated by the entry of rival firms.
B.
economic profits will be reduced but not eliminated by the entry of rival firms.
C.
entry by other firms will not occur.
D.
the price will be the same as in a perfectly competitive market.
【单选题】A firm has the long run cost function C(q)=4q 2 + 4. In the long run, it will supply a positive amount of output, so long as the price is greater than:
A.
16
B.
24
C.
4
D.
8
【单选题】As used in the last sentence, the phrase 'in short' means ______.
A.
in the long run
B.
in detail
C.
in fact
D.
in a word
【单选题】A firm has the long run cost function C(Q) = 7Q 2 + 252. In the long run, it will supply a positive amount of output, so long as the price is greater than:
A.
168
B.
176
C.
42
D.
84
E.
89
【简答题】A．He tries to find out all he can about a new environment and puts what he thinks into an immediate action. B．He never feels ashamed of what he has done. C．He puts other people in the position of prio...
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