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【单选题】
At his current level of output, a monopolist has a MR of $10, a MC of $6, and an economic profit of zero. If the market demand curve is downward sloping and his marginal cost curve is upward sloping, the monopolist:A.
is producing at the profit-maximizing level of output.
B.
could increase profit by increasing output.
C.
could increase profit by increasing his price.
D.
should exit the market if significant fixed costs have been incurred.
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于肾的描述正确的是
A.
外侧缘中部凹陷称肾门
B.
肾门约与第3腰椎体平齐
C.
肾门内有肾动脉、肾静脉、输尿管、神经、淋巴管通过
D.
竖脊肌侧缘与第12肋之间的交角称肾区
E.
右侧肾蒂较左侧长
【单选题】在夯实地基法中，( )适用于处理高于地下水位0．8m以上稍湿的黏性土、砂土、湿陷性黄土、杂填土和分层填土地基的加固处理。
A.
重锤夯实法
B.
挤密桩法
C.
强夯法
D.
砂石桩法
【单选题】The desired engine set-point speed is provided by ______.
A.
the ACP
B.
a manual control lever
C.
both A and B
D.
either A or B
【单选题】在夯实地基法中,重锤夯实法适用于处理高于地下水位0.8m以上稍湿的黏性土,砂土,湿陷性黄土,杂填土,和( )的加固处理.
A.
亚黏土
B.
分层填土地基
C.
碎石土层
D.
软石土层
【单选题】The desired engine set-point speed is provided by ______.
A.
the APC
B.
a manual control lever
C.
the APC and a manual control lever
D.
the APC or a manual control lever
【简答题】所谓标准溶液是已知其准确( )的试剂溶液
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