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【单选题】
变压器绕组的直流电阻测量方法通常有A.
电压表法和平衡电桥法
B.
电流表法和平衡电桥法
C.
电压表法和电流表法
D.
电压降法和平衡电桥法
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反馈参考答案：
举一反三
【多选题】关于排列图（柏拉图）的描述，正确的（）
A.
显示出每个质量改进项目对整个质量问题的作用
B.
能让我们观察到导致不良结果的少数关键因素，有针对性采取措施，改进效果明显
C.
由日本东京大学教授石川馨博士首次引进到品管圈进行质量数据分析
D.
帮助识别质量改进的机会
【单选题】When monopolistic profit has been maximized, its marginal cost is ___ than its marginal revenue.
A.
bigger
B.
smaller
C.
equal to
D.
all above options are
【判断题】In monopolistic competition The equilibrium price and number of firms occurs when price equals average cost.
A.
正确
B.
错误
【单选题】Monopolistic competition occurs when an industry has many firms offering products that are similar but not ________.
A.
equal
B.
different
C.
identical
D.
distinct
【单选题】In the long run under monopolistic competition, when firms advertise,
A.
they will still earn zero economic profit.
B.
they can earn positive economic profit by increasing market share.
C.
the market price must fall.
D.
the market price must rise.
【单选题】Monopolistic competition occurs when an industry has many firms offering products that are similar but not ________.
A.
identical
B.
different
C.
equal
D.
distinct
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