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【单选题】
假如学生的考试成绩用优秀、良好、中等、及格和不及格来表示，那么全班考试成绩的水平高低应该用什么平均数来说明？（ ）A.
可以用算术平均数
B.
只能用众数
C.
只能用中位数
D.
可以用中位数或众数
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【单选题】听力原文：M: Could you tell me a bit about quality control at the factory? W: Well, there are four main quality control inspection points. We begin by visiting our suppliers to make sure we are happy with ...
A.
Three
B.
four
C.
five
【简答题】伸顶通气管高出屋面不得小于（ ），且必须大于最大积雪厚度。
【单选题】听力原文：M: Oh, yes, we work very hard in our factory. W: So you get up early every day? M: Well, I live near the factory, so I get up at about 6:30. W: Do you have breakfast? M: Yes, I have some bread, a...
A.
In a factory.
B.
In a hospital.
C.
On a farm.
【单选题】听力原文：M: What are you going to do about the factory? W: Considering that production has gone down so much and for so long, we'll probably have to close it. Q: What has happened in the factory? (2)
A.
It has been closed.
B.
The production has increased for a long time.
C.
The production has decreased for a long time.
D.
It has been reopened.
【简答题】根据认知价值定价法，如果某一家企业的定价低于其认知价值，则它将会得到一个______平均数的市场占有率。
【单选题】The new factory is not likely to be built because of ______.
A.
the technical problem
B.
the money problem
C.
the pollution problem
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