问题 问答题 简答题

水环式真空泵的性能参数有哪些?

答案

参考答案:

①有排气量

②转速

③最大真空度

④水耗量

⑤配用功率等

阅读理解与欣赏
孔子世家
  孔子迁于蔡三岁,吴伐陈。楚救陈,军于城父。闻孔子在陈、蔡之间,楚使人聘孔子。孔子将往拜礼,陈、蔡大夫谋曰:“孔子贤者,所刺讥皆中诸侯之疾。今者久留陈、蔡之间,诸大夫所设行皆非仲尼之意。今楚,大国也,来聘孔子。孔子用于楚,则陈、蔡用事大夫危矣。”于是乃相与发徒役围孔子于野。不得行,绝粮。从者病,莫能兴。孔子讲诵弦歌不衰。子路愠见曰:“君子亦有穷乎?”孔子曰:“君子固穷,小人穷斯滥矣。”
  子贡色作。孔子曰:“赐,尔以予为多学而识之者与?”曰:“然。非与?”孔子曰:“非也。予一以贯之”。
  孔子知弟子有愠心,乃召子路而问曰:“《诗》云‘匪兕匪虎,率③彼旷野’。吾道非耶?吾何为于此?”子路曰:“意者吾未仁耶?人之不我信也。意者吾未知耶?人之不我行也。”孔子曰:“有是乎!由,譬使仁者而必信,安有伯夷、叔齐?使智者而必行,安有王子比干?”
  子路出,子贡入见。孔子曰:“赐,《诗》云‘匪兕匪虎,率彼旷野’。吾道非耶?吾何为于此?”子贡曰:“夫子之道至大也,故天下莫能容夫子。夫子盖少贬焉?”孔子曰:“赐,良农能稼而不能为穑,良工能巧而不能为顺。君子能修其道,纲而纪之,统而理之,而不能为容。今尔不修尔道而求为容。赐,而志不远矣!”
  子贡出,颜回入见。孔子曰:“回,《诗》云‘匪兕匪虎,率彼旷野’。吾道非耶?吾何为于此?”颜回曰:“夫子之道至大,故天下莫能容。虽然,夫子推而行之,不容何病,不容然后见君子!夫道之不修也,是吾丑也。夫道既已大修而不用,是有国者之丑也。不容何病,不容然后见君子!”孔子欣然而笑曰:“有是哉颜氏之子!使尔多财,吾为尔宰。”
  于是使子贡至楚。楚昭王兴师迎孔子,然后得免。
  注释:①非与:难道不是吗? ②一以贯这之:意思是做人坚守一个根本的原则。 ③率:行走。 ④稼:种庄稼。穑:收庄稼。 ⑤宰:家臣,总管。(选自《史记·孔子世家》,有删节)
1.对下列各句中划线词解释,不正确的一项是
[ ]
A.楚救陈,于城父 军:驻扎
B.则陈、蔡用事大夫危矣 用事:当权
C.君子亦有穷乎 穷:困厄
D.夫子推而行之,不容何 病:痛苦
2.下列各组划线词,意义和用法完全相同的一组是
[ ]
A.孔子用于楚,陈、蔡用事大夫危矣 于其身也,耻师焉
B.于是相与发徒役围孔子于野 今君亡赵走燕
C.赐,志不远矣 某所,母立于兹
D.人不我信也 郯子徒,其贤不及孔子
3.下列各句句式特点不同其它三句的一项是
[ ]
A.孔子用于楚
B.若属皆且为所虏
C.吾长见笑于大方之家
D.覆杯水于坳堂之上
4.下列对原文有关内容的分析和概括,不正确的一项是
[ ]
A.陈国、蔡国的大夫所作所为都违反孔子的心意且孔子又是贤人,因而当得知楚昭王要派人聘请孔子时,他们考虑到孔子入楚对已不利,就共同调发役徒孔子围困在野外。
B.孔子一行被困在陈国时,粮食断绝,随从一一饿倒,生命危在旦夕,就连被孔子称为最勇敢的子路这时也沉不住气了。而孔子临危不忘义,处惊而不变,用自己的行为为他所倡导的士节写下了形象的注解。
C.子路、子贡对孔子“为什么受困在这里”的回答,虽然角度不同,子路认为:主张不被别人采纳,是由于身在仁、智方面不到家,所以别人看不起;子贡认为:主张不被采纳,是由于老师把标准定得太高,别人接受不了,应该降低要求。但都对孔夫子之道表示质疑,表现了二人“穷”境之中的信仰危机,所以遭到了孔子的批评。
D.颜回认为正确的主张不被别人采纳,自己仍坚持下去,这才显出君子的修养。颜回对孔子的回答,做到审时知事而又笃信其道坚守操行,正符合孔子“一以贯之”的思想。孔子听了颜回的议论感到欣慰,并许诺将来让颜回拥有许多财产,自己愿给他当管家。
阅读理解

阅读理解。

     The pupils of the remote Beau-Roc primary school in Haiti are chanting.One of them plays a guitar

made from an empty oil tin.Their headmistress, Emile Jean-Noel, is one of the few women school

headteachers in the country.

     Today, over 70% of Haitian population live without proper food, water, schools, or housing. To

reduce the hunger that prevents learning and to encourage parents to send their children to school, meals

are provided by the World Food Programme.

     "We are so cut off that we have many difficulties," comments Emile, adding that finding chalk, school

books and other materials is practically impossible.Emile tries to encourage people around her to make use

of available resources.Her efforts are bearing fruit.One of her successes was convincing local women to

contribute to their children' s schooling and increase their income by selling embroidery( 刺绣) and other

handicrafts.

     Recent political instability has meant that the country has not invested (投资) in education for ten

years.Only 44% of children go to school and less than half of them finish primary school. Less than a

third of these children go on to secondary school.In rural areas it is not rare to find 17 and 18 year olds

in primary school- Beau-Roc has only 4 teachers for 260 pupils.Emile works constantly to improve her

pupils' environment.Under her direction, a local worker is now constructing a store house for the food

delivered regularly by the WFP.

      Not only is Emile' s salary small, but she receives it irregularly.For her, transport is a real headache.

She lives five kilometers away and has to take the tap tap, a privately-owned bus, costing more than she

can afford.

     "The decision to be a rural teacher in Haiti should not be taken lightly", Emile comments. "With all the

sacrifices and risks it requires, only those who are really cut out for teaching should do it." However,

Emile loves her job. "I always feel at home with the children and, because the parents understand what I'm

doing, I try to give my best."

1. Which of the following is extremely difficult for Beau-Roc primary school?

A. Teaching the women how to make embroidery and other handicrafts.

B. Persuading local women to care about their children' s education.

C. Encouraging people around to use those available resources.

D. Finding chalk, school books and other materials.

2. The many figures in Paragraph 4 indicate _____.

A. poor investment in Haitian education

B. political instability in Haiti

C. challenges in Emile' s life

D. Emile' s constant efforts

3. In the last paragraph, "those who are really cut out for teaching" refer to people who are _____.

A. dismissed from teaching

B. unfamiliar with teaching

C. qualified for teaching

D. cautious about teaching

4. What topic is presented in this passage?

A. Hardship for teachers.

B. Devotion to education.

C. Politics and children.

D. Love and beauty.