题目内容

材料在空气中能吸收空气中水分的能力称为（

A.吸水性
B. 吸湿性
C. 耐水性
D.渗透性

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亲水材料的湿润边角≤（）。

A.45°
B.75°
C.90°
D.115°

国家强制标准代号用什么表示？

A.JC
B.DB
C. D.QB
D.GB

材料按其化学组成可以分为哪几种？

A.无机材料、有机材料
B.金属材料、非金属材料
C.植物质材料、高分子材料、沥青材料、金属材料
D.无机材料、有机材料、复合材料

1、My love is a red red rose. ( Robert Burns) ( )2、He jumped back as if he had been stung, and the blood rushed into his wrinkled face. ( )3、The cheque fluttered to the floor like a bird. ( )4、She is a cat. I don’t like her very much. ( )5、My 15 students read Emerson, Thoreau, and Huxley. ( )6、Time flies! ( ) 7、We all are wild with overjoy.ChinabeatCubain the Olympic Games.（）8、Long time no see/sea ( )9、He grandfather is a very nice man, but it is a great pity he passed away last year. （） 10、It is said all the sailors of that sunken ship became food of fishes. ( ）