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已知某轧钢厂所用原料的规格是100mm×100mm×6000mm，钢的密度7.8×103kg/m3，求原料的理论重量是多

答案

参考答案：

G＝0.1×0.1×6×7.8×103＝0.468×103kg

答：原料的理论重量是468kg。

单项选择题

过敏性结膜炎和细菌性结膜炎属于（）

A．滤泡性结膜炎

B． * * 性结膜炎

C．结膜肉芽肿

D．真膜形成

E．结膜溃疡
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单项选择题

Although interior design has existed since the beginning of architecture, its development into a specialized field is really quite recent. Interior designers have become important partly because of the many functions that might be (51) in a single large building.

The importance of interior design becomes (52) when we realize how much time we (53) surrounded by four walls. Whenever we need to be indoors, we want our surroundings to be (54) attractive and comfortable as possible. We also expect (55) place to be appropriate to its use. You would be (56) if the inside of your bedroom were suddenly changed to look (57) the inside of a restaurant. And you wouldn’t feel (58) in a business office that has the appearance of a school.

It soon becomes clear that the interior designer’s most important basic (59) is the function of the particular (60) .

58().

A.correct 

B.proper 

C.right 

D.suitable
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