【单选题】
According to the author, the deaths among youth are mainly caused by _____. ___
A. traffic accidents
B. smoking-related diseases
C. murder
D. all of these
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答案
B
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相关试题
【单选题】
Every day there are over_____high school students who will become regular smoker. ___
A. 75
B. 23
C. 30
D. 3000
【单选题】
By "dropout" the author means______. ___
A. students who failed the examination
B. students who left school
C. students who lost their way
D. students who were driven out of school
【单选题】
The reason for declining adolescent smoking is that ________. ___
A. NCI has taken effective measures
B. smoking is prevented among high school seniors
C. there are many smokers who have died of cancer
D. not stated
【单选题】
What is implied but not stated by the author is that ________. ___
A. smoking rates among youth have declined very little
B. there are now more female than male smokers among high school seniors
C. high smoking rates are due to the increase in wealth
D. smokers at high school are from low socio-economic backgrounds
【单选题】
According to the passage, which of the following is NOT a disadvantage of part time education? _______________ ___
A. It requires some break in one's career.
B. It tends to last too long for many people to complete a degree program.
C. It affects one's career.
D. It gives the student less time to share with the family.
【单选题】
Which of the following is NOT an advantage of distance learning? _________ ___
A. The student may choose his or her own pace.
B. The student may study at any time to his or her convenience.
C. They can pursue their chosen career while studying.
D. Their tutorial assistance comes through regular airmail, telephone, etc.
【单选题】
What benefit will distance learning program bring to a business? __________ ___
A. Recruitment of more talented people.
B. Good image of the business.
C. Better cooperation with universities.
D. Further training of employees and business growth.
【单选题】
Good distance learning program have the following characteristic EXCEPT______. ___
A. distance learning course is the same as students taking courses in campus
B. the degree should be same as on campus study
C. professor-student relationship is strictly one to one all through the course
D. includes subject evaluation tool
【单选题】
What benefit will distance learning bring to an employee of a business? ___________ ___
A. Professional growth.
B. Good relationship with the employer.
C. Good impression on the employer.
D. Higher salary.
【单选题】
In the first paragraph, what does "plastic money" (Line 6, Para.1) refer to? ______ ___
A. Dollars.
B. Online payment.
C. Credit cards.
D. Coins.
【单选题】
Which of the following is NOT true about credit cards? ____________ ___
A. Shopkeepers, among others, object to the use of credit cards because they add on the cost of the merchandise.
B. Credit card holders actually pay for their goods after the purchase has been completed.
C. The national company enjoys extensive growth because of the use of credit cards.
D. It has had the effect of increasing consumption.
【单选题】
What is the disadvantage of credit cards? _____________ ___
A. It may lead to the overgrowth of the national economy.
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C. Some people may intentionally purchase goods that they cannot possibly afford.
D. Those who pay by cash at the purchase will have to pay for the cost added to the product as the interest charge of credit cards.
【单选题】
What is the main topic of the text? ________________ ___
A. Advantages and Disadvantages of Credit Cards.
B. Economic Growth Backed up by the Use of Credit Cards.
C. It can encourage great sums of consumption.
D. Credit Cards Make Life
E. asier.
【单选题】
The author's attitude towards credit card is.______________. ___
A. agreeable
B. neutral
C. humorous
D. oppositional
【单选题】
在甲午战争后，严复翻译的《天演论》所宣传的重要思想是___。
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C. “天下兴亡，匹夫有责”
D. “物竞天择，适者生存”
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鸦片战争以清政府的失败而告终。1842 年 8 月 29 日，清政府与英国签订了中国近代史上的第一个不平等条约是___。
A. 中英《虎门条约》
B. 中英《南京条约》
C. 中美《望厦条约》
D. 中法《黄埔条约》
【单选题】
德国元帅瓦德西说：“无论欧、美、日本各国，皆无此脑力与兵力，可以统治此天下生灵四分之一，故瓜分一事，实为下策。”这表明___。
A. 帝国主义已灭亡中国
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下面表述不正确的是___。
A. 中国人民的反侵略战争，激起了帝国主义列强的侵华野心。
B. 中国人民的反侵略战争，使我们的国家和民族历尽劫难、屡遭侵略而不亡。
C. 中国人民的反侵略战争表现出来的爱国主义精神，铸成了中华民族的民族魂。
D. 中国人民反侵略战争的失败，从反面教育了中国人民，极大地促进了中国人的思考、探 索和奋起，反侵略战争的过程，是中华民族逐步觉醒的过程。
【单选题】
魏源在其___中，提出了“师夷长技以制夷”的思想，主张学习外国先进的军事和科学技术，以期富国强兵，抵御外国侵略，开创了中国近代向西方学习的新风。
A. 《四洲志》
B. 《盛世危言》
C. 《夷情备采》
D. 《海国图志》
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【单选题】
含硫化氢天然气指天然气中硫化氢含量大于___的天然气。
A. 150mg/m³（100ppm）
B. 135 mg/m³（90ppm）
C. 75 mg/m³（50ppm）
D. 30 mg/m³（20ppm）
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二氧化硫的阈限值是___
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【单选题】
___可能会出现:视线模糊，有光圈感；眼睛灼痛，流泪，红肿发炎，怕光；呼吸困难、流涎、呼吸道粘液多，呼出的气体有硫化氢味，咳嗽、胸闷、胸痛。
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D. 吸入硫化氢
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硫化氢主要是对水基钻井液有较大的污染，会使钻井液性能发生很大变化，如密度___、pH值下降、粘度（ ）。
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现场需要24小时连续监测硫化氢浓度时，应采用___硫化氢监测仪，用于监测井场中硫化氢容易泄漏和积聚场所的硫化氢浓度值。
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【单选题】
第三级报警值应设置在危险临界浓度___。
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第一级报警值应设置在阈限值___。
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【单选题】
气瓶中高压压缩空气被高压减压阀降为中压___左右输出，经中压管送至需求阀，然后通过需求阀进入呼吸面罩，吸气时需求阀自动开启供使用者吸气，并保持一个可自由呼吸的压力。
A. 0.3 MPa
B. 0.5 MPa
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【单选题】
现场常用的空呼器气瓶容积为6.8L,充气压力30MPa为例:(假设佩戴者为高强度劳动强度，耗气量为50L/min)该空呼器能使用的时间为___。
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【单选题】
正压式空气呼吸器配有一个专用报警器，当压力低于大约___MPa时可以自动报警，提醒充气，在使用之前应检查空呼器的报警装置是否完好。（按塔里木教材）
A. 2
B. 3
C. 4
D. 5
【单选题】
正压式空气呼吸器的连接管路密封性测试；把气瓶的阀门拧紧，仔细观察气压表上的读数在一分钟之内的减小不能超过___MPa，否则空气呼吸器就需要维修。（按塔里木教材）
A. 0.2
B. 0.3
C. 0.4
D. 0.5
