试题与答案

灰体表面热阻与( )无关。A.表面位置 B.表面材料 C.表面尺寸 D.表面粗糙度

题型:单项选择题

题目:

灰体表面热阻与( )无关。

A.表面位置

B.表面材料

C.表面尺寸

D.表面粗糙度

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A, B解析:[知识点] 药品检验工作的基本程序

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High childcare costs are putting British mothers off going out to work. It really is that simple. Eurostat figures show that 66 per cent of mothers in the UK work, less than France (72 per cent), Denmark (86 per cent), the Netherlands (78 per cent) or Germany (69 per cent). This not only damages Britain’s economic prosperity—it limits women’s careers and squeezes family incomes. It would be fine if this is the choice parents want to make, but it isn’t. Half of those surveyed want to go to work and the expense of childcare is one of the key reasons they couldn’t.

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