叶片泵密封填料不符合要求易造成漏气,使得泵的噪音增大,容积效率减少。

题型:判断题

问题:

叶片泵密封填料不符合要求易造成漏气,使得泵的噪音增大,容积效率减少。

考点:机修钳工考试高级机修钳工高级机修钳工题库
题型:判断题

阅读理解。

                                                                         Hunting

     The days of the hunter are almost over in India. This is partly because there is practically nothing left to

kill, and partly because some steps have been taken, mainly by banning tiger-shooting, to protect those animals

which still survive.

     Some people say that Man is naturally a hunter. I disagree with this view. Surely out earliest forefathers,

who at first possessed no weapons, spent their time digging for roots, and were no doubt themselves often

hunted by meat-eating animals.

     I believe the main reason why the modern hunter kills is that he thinks people will admire his courage in

overpowering dangerous animals. Of course, there are some who truly believe that the killing is not really the

important thing, and that the chief pleasure lies in the joy of the hunt and the beauties of the wild countryside.

There are also those for whom hunting in fact offers a chance to prove themselves and risk death by design;

these men go out after dangerous animals like tigers, even if they say they only do it to rid the countryside of

a threat. I can respect reasons like these, but they are clearly different from the need to strengthen your high

opinion of yourself.

     The greatest big-game hunters expressed in their writings something of these finer motives (动机). One

of them wrote.

     "You must properly respect what you are after and shoot it cleanly and on the animal's own territory (领

地).You must fix forever in your mind all the wonders of that particular day. This is better than letting him

grow a few years older to be attacked and wounded by his own son and eventually eaten, half alive, by other

animals. Hunting is not a cruel and senseless killing-not if you respect the thing you kill, not if you kill to

enrich your memories, not if you kill to feed your people."

     I can understand such beliefs, and can compare these hunters with those who hunted lions with spears

(矛) and bravely caught them by the tail. But this is very different from many tiger-shoots I have seen, in

which modern weapons were used. The so-called hunters fired from tall trees or from the backs of trained

elephants. Such methods made tigers seem no more dangerous than rabbits.

1. There is no more hunting in India now partly because _____.

A. it is dangerous to hunt there

B. hunting is already out of date

C. hunters want to protect animals

D. there are few animals left to hunt

2. The author thinks modern hunters kill mainly _____.

A. to make the countryside safe

B. to earn people's admiration

C. to gain power and influence

D. to improve their health

3. What do we learn about the big-game hunters?

A. They hunt old animals

B. They mistreat animals

C. They hunt for food

D. They hunt for money

4. What is the author's view on the tiger-shoots he has seen?

A. Modern hunters lack the courage to hunt face-to-face

B. Modern hunters should use more advanced weapons

C. Modern hunters like to hunt rabbits instead of tigers

D. Modern hunters should put their safety first

题型:判断题

380V手车式动力开关送电操作。

题型:判断题

下列图表的内容与德国现代化进程有关,左侧是史实的陈述,右侧是对陈述的推论。判断这些推论正确与否,并在答题纸相应的序号中填上是或否。(5分)

史实推论
①普鲁士在普法战争中获胜普鲁士的制度比法国先进
②威廉二世上台后放弃了俾斯麦的“大陆政策”俾斯麦为人过于骄横,不受威廉二世赏识
③二战后德意志民族分裂为两个国家德国成为冷战在欧洲的前沿阵地
④联邦德国建立了社会市场经济体制标志着社会主义经济模式的胜利
⑤1990年,民主德国并入联邦德国联邦德国的社会经济发展水平比民主德国高,政局更稳定

题型:判断题

客观现象由于受自然因素和社会因素的影响,在一年内随季节的更换而引起的规律性变动称作()。

A.长期趋势

B.季节变动

C.循环变动

D.不规则变动

题型:判断题

读图时代,要学会运用一些现代的手段,通过()等,完成演讲。

A.电子视频

B.电子提示屏麦克风

C.自动遥控

D.秘书的配合

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