问题 单项选择题

下列有关普通水泥混凝土的叙述,下列哪一项不正确?()

A.在混凝土中,除水泥外,骨料与水的重量约占总用量的80%以上

B.在钢筋混凝土结构中,混凝土承受压力,钢筋承受拉力

C.混凝土与钢筋的热膨胀系数大致相同

D.普通水泥混凝土的干表观密度与烧结普通砖相同

答案

参考答案:D

解析:烧结普通砖的表现密度在1600-1800kg/m3之间;普通混凝土的干表观密度为2000-2800kg/m3之间见《普通混凝土配合比设计规程JC]55-2000)。

阅读理解

阅读理解。

     The English, as a race, are very different in many ways from all other nationalities, including their closest

neighbors, the French and the Belgians. It is claimed that living on an island separated from the rest of the

Europe has much to do with it. Whatever the reasons are, it may be fairly stated that the Englishman has

developed many attitudes and habits which distinguish him from other nationalities.

     Broadly speaking, an Englishman is a quiet, shy, reserved person who is fully relaxed only among people

he knows well. In the presence of strangers or foreigners he often seems restrained, even embarrassed. You

have only to witness a city train any morning or evening to see the truth of this. Serious looking men and

women sit reading their newspapers of having a light sleep in a corner, no one speaks. In fact, to do so would

seem most unusual. An Englishman, pretending to be giving advice to overseas visitors, once suggested, "On

entering a railway carriage, shake hands with all the passengers." Needless to say, he was not being serious.

There is an unwritten but clearly understood code of behavior which, if broken, makes the person immediately

suspected.

     In many parts of the world it is quite normal to show openly extremes of enthusiasm, emotion, excitement,

etc., often accompanied by appropriate gestures. The Englishman is somewhat different. Of course, an

Englishman feels no less deeply than any one of a different nationality, but he tends to display his feelings far

less. This is reflected in his use of language. Imagine a man commenting on the great beauty of a young girl.

Whereas a more emotional man might describe her as "an excellent jewel", "extremely beautiful", and "precious",

the Englishman will flatly state "Oh, she's all right." An Englishman who has seen a highly successful and

enjoyable film recommends it to a friend by commenting, "It's not bad you know." or on seeing very unusual

scenery he might convey his pleasure by saying. "Nice, yes, very nice." The overseas visitor must not be

disappointed by this apparent lack of interest and involvement. Instead, he must realize that "all right", "not bad",

and"nice", very often have the sense of "first-class", "excellent", and "beautiful". This use of language of a

unique style, particularly common in England is known as restrained statement.

1. From the passage people can infer that the English are different from other nationalities mainly in _____. [ ]

A. attitudes

B. characters

C. habits

D. all the above

2. If one doesn't want to be suspected in pubic, he had better _____. [ ]

A. follow the English code of behavior

B. shake hands with all the people he meets

C. talk with others

D. keep quiet

3. The underlined word "restrained" in paragraph 2 most probably means _____.[ ]

A. friendly and kind

B. polite and graceful

C. afraid and frightened

D. calm and controlled

4. According to the passage, the Englishman _____. [ ]

A. has less feelings than other nationalities

B. has emotions as deep as any other nationalities

C. is liable to express emotion by means of language

D. likes to have a joke with foreign visitors

5. An Englishman's saying "all right" usually expresses the meaning of "_____". [ ]

A. not bad

B. quite right

C. not good

D. very good

判断题