铸造铝合金的铸造性能好,但塑性较差,故一般不进行压力加工,只用于铸造成型。

题型:判断题

问题:

铸造铝合金的铸造性能好,但塑性较差,故一般不进行压力加工,只用于铸造成型。

考点:汽车修理工考试汽车修理工(中级)汽车修理工(中级)题库
题型:判断题

(96~98题共用题干)患者,男,66岁。活动后气短半年,逐渐加重,干咳,伴有明显乏力和消瘦。2个月来体重下降约4kg,无明显发热。吸烟40余年,1~2包/天,有高血压病史。查体:浅表淋巴结未及,双肺中下野可闻及Velcro啰音,肝脾肋下未及。杵状指(+)。

下列检查中,对该患者疾病诊断意义最大的是

A.肺功能检查

B.血气分析

C.胸部HRCT检查

D.血清结核抗体检查

题型:判断题

C

People do not analyze every problem they meet. Sometimes they try to remember a solution from the last time they had a similar problem. They often accept the opinions or ideas of other people. Other times they begin to act without thinking. They try to find a solution by trial and error. However, when all these methods fail, the person with a problem has to start analyzing. There are six stages in analyzing a problem.

First the person must recognize that there is a problem. For example, Sam’s bicycle is broken, and he cannot read it to class as he usually does. Sam must see that there is a problem with his bicycle.

Next the thinker must define the problem. Before Sam can repair his bicycle, he must find out the reason why it does not work. For instance, he must determine if the problem is with the gears, the brakes, or the frame. He must make his problem more specific.

Now the person must look for information that will make the problem clearer and lead to possible solutions. For instance, suppose Sam decided that his bike does not work because there is something wrong with the gear wheels. At this time, he can look in his bicycle repair book and read about gears. He can talk to his friends at the bike shop. He can look at his gears carefully.

After studying the problem, the person should have several suggestions for a possible solution. Take Sam as an illustration. His suggestions might be: put oil on the gear wheels; buy new gear wheels and replace the old ones; tighten or loosen the gear wheels.

Eventually one suggestion seems to be the solution to the problem. Sometimes the final idea comes very suddenly because the thinker suddenly sees something new or sees something in a new way. Sam, for example, suddenly sees that there is a piece of chewing gum between the gear wheels. He immediately realizes the solution to his problem: he must clean the gear wheels.

Finally the solution is tested. Sam cleans the gear wheels and finds that afterwards his bicycle works perfectly. In short , he has solved the problem.

51. What is the best title for this passage?

A. Six Stages for Repairing Sam’s Bicycle

B. Possible Ways to Problem-solving

C. Necessities of Problem Analysis

D. Suggestions for Analyzing a Problem

52. In analyzing a problem we should do all the following except                 .

A. recognize and define the problem

B. look for information to make the problem clearer

C. have suggestions for a possible solution

D. find a solution by trial or mistake

53. By referring to Sam’s broken bicycle, the author intends to _________.

A. illustrate the ways to repair his bicycle

B. discuss the problems of his bicycle

C. tell us how to solve a problem

D. show us how to analyze a problem

54. Which of the following is NOT true?

A. People do not analyze the problem they meet.

B. People often accept the opinions or ideas of other people.

C. People may learn from their past experience.

D. People can not solve some problems they meet.

55. As used in the last sentence, the phrase “in short” means _________.

A. in the long run         B. in detail                   C. in a word                 D. in the end

题型:判断题

我国《证券投资基金法》规定,封闭式基金的存续期应在( )以上。

A.1年
B.3年
C.5年
D.10年

题型:判断题

负责药品、医疗器械的检验检测工作的机构是()

A.中国食品药品检定研究院

B.CFDA药品审评中心

C.CFDA药品评价中心

D.CFDA食品药品审核查验中心

题型:判断题

关于射线特征的描述,正确的是:()

A.α粒子由2个质子和电子组成

B.β-粒子为单一能谱,带一负电荷

C.β+粒子能与物质作用产生湮没辐射

D.γ粒子不带电,质量数为1

E.α粒子由于带2个正电荷,电离辐射作用大,外照射危害比γ射线大

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