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【单选题】
Mrs. Smith operates a business in a competitive market. The current market price is $8.10. At her profit-maximizing level of production, the average variable cost is $8.00, and the average total cost is $8.25. Mrs. Smith shouldA.
continue to operate in the short run but shut down in the long run.
B.
shut down her business in the short run but continue to operate in the long run.
C.
continue to operate in both the short run and long run.
D.
shut down in both the short run and long run.
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举一反三
【单选题】---- Where are you from? ----____.
A.
I am in the classroom
B.
I’m in Beijing
C.
I’m from Shanghai
D.
I’m reading a book
【多选题】t1为表名,info为列族名,以下get命令使用正确的是()。
A.
get 't1','info'
B.
get 't1','170101',{NAME=>'info'}
C.
get 't1','170101',{COLUMN=>'info'}
D.
get 't1','170101',{COLUMN=>['info:name','info:sex'],VERSIONS=>3}
【单选题】信息化战争的基本内涵是信息化战争必然以（）为主体作战力量，战争双方至少有一方拥有信息化军队才能进行的战争。
A.
机械化军队
B.
信息化军队
C.
重武器军队
D.
现代军队
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