工程上单一使用土工膜厚度不小于0.5mm。（）

如果用这10批的结果推断过程平均，则过程平均中每百单位产品不合格数为（ ）。

A.26.83
B.2.683
C.262.0%
D.2660%

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Speaker A：I think Jack needs to go on a diet.He’s putting on so much weight.Speaker B：（）

A．Yes，he used to be overweight.
B．Yes，I don’t think highly of him.
C．How much do you think he actually weighs now？
D．Do you think so？I think he looks OK the way he is.

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