冲击试验机在打击瞬间摆锤的冲击速度应为()。 A.2±0.1mm B.2±0.01m

题型:单项选择题

问题:

冲击试验机在打击瞬间摆锤的冲击速度应为()。

A.2±0.1mm

B.2±0.01mm

C.2±0.05mm

考点:物理性能检验工中级物理性能检验工中级物理性能检验工题库
题型:单项选择题

Generally speaking, a British is widely regarded as a quiet, shy and conservative person who is (1) only among those with whom he is acquainted. When a stranger is at present, he often seems nervous, even (2) . You have to take a commuter train any morning or evening to (3) the truth of this.

Serious-looking businessmen and women sit reading their newspapers or dozing in a corner; hardly anybody talks, since to do so would be considered quite (4) .

(5) , there is an unwritten but clearly understood code of behavior which, once broken, makes the offender immediately the object of (6) .

It has been known as a fact that a British has a (7) for the discussion of their weather and that, if given a chance, he will talk about it (8) .

Some people argue that it is because the British weather seldom (9) forecast and hence becomes a source of interest and (10) to everyone.

This may be so. (11) a British cannot have much (12) in the weathermen, who, after promising fine, sunny weather for the following day, are often proved wrong (13) a cloud over the Atlantic brings rainy weather to all districts! The man in the street seems to be as accurate — or as inaccurate — as the weathermen in his (14) .

Foreigners may be surprised at the number of references (15) weather that the British (16) to each other in the course of a single day. Very often conversational greetings are (17) by comments on the weather. “Nice day, isn’t it” “Beautiful!” may well be heard instead of “Good morning, how are you” Although the foreigner may consider this exaggerated and comic, it is (18) .pointing out that it could be used to his advantage. If he wants to start a conversation with a British but is at a loss to know (19) to begin, he could do well to mention the state of the weather. It is a safe subject which will (20) an answer from even the most reserved of the British.

16()

A.take

B.forecast

C.make

D.predict

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在消防应急照明和疏散指示系统中,当消防应急标志灯具的表面亮度小于()时,应马上进行更换。

A.5cd/m2

B.15cd/m2

C.25cd/m2

D.45cd/m2

题型:单项选择题

监控型发动机电子控制中,()部分是主控制器。

A、电子控制器

B、液压机械式燃油控制器

C、都是主控制器,缺一不可

D、FADEC

题型:单项选择题

下列哪一项不会出现在躁狂发作中?()

A.自大自负

B.思维奔逸

C.傲慢自负

D.寡言少语

题型:单项选择题

被监督单位基本情况数据库内容包括()

A.被监督单位代码和单位所在地的行政区划代码

B.被监督单位基本情况

C.被监督单位发展规划、单位财政预算情况

D.执业许可情况、执业人员组成情况

E.卫生许可情况

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