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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 should
A.
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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参考答案:
举一反三
【判断题】通过半径为圆弧编制程序,半径取负值时刀具移动角应大于等于180度。( )
A.
正确
B.
错误
【单选题】根据以下内容回答题: Adam Smith,writing in the 1770s,was the first person to see the importance of the divi-sion of labor and to explain part of its advantages.He gives as an example the process by which pins w...
A.
take advantage of the division of the labor
B.
introduce the division of labor into England
C.
understand the effects of the division of labor
D.
explain the causes of the division of labor
【简答题】In face of         failure, it is the most important to keep up           good state of mind. A .不填; a B . a 不填 C . the 不填 D .不填; the
【单选题】通过半径为圆弧编制程序,半径取负值时刀具移动圆弧对应圆心角应 ( ) 。
A.
大于等于180度
B.
小于等于180度
C.
等于180度
D.
大于180度
【单选题】Accounting is described as ________ science of classifying, recording and reporting ________ important financial events.
A.
an, the
B.
a, 不填
C.
不填, 不填
D.
不填, the
【单选题】采购、使用不符合食品安全标准的食品原料、食品添加剂、食品相关产品,根据食品安全法()规定进行处罚。
A.
第一百二十五条
B.
第一百二十六条
C.
第一百二十四条
D.
第一百二十七条
【单选题】通过半径为圆弧编制程序,半径取负值时刀具移动角应( ) A
A.
大于等于180度
B.
小于等于180度
C.
等于180度
D.
大于180度
【简答题】如图,已知椭圆 x 2 a 2 + y 2 b 2 (a>b>0)的离心率 e= 6 3 ,短轴长为2. (1)求椭圆的方程. (2)已知定点E(-1,0),若直线y=kx+2(k≠0)与椭圆交于C、D两点.问:是否存在k的值,使以CD为直径的圆过E点?请说明理由.
【判断题】¿Os importa/ importaría hablar más alto?
A.
正确
B.
错误
【单选题】通过半径为圆弧编制程序,半径取负值时刀具移动角应 ( ) 。
A.
大于等于 180 度
B.
小于等于 180 度
C.
等于 180 度
D.
大于 180 度
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