| One of the most important
technological developments during the 1980s has been the emergence of optical
fiber communication as a major international industry. One indication of the{{U}}
(51) {{/U}}of this development is the total{{U}} (52) {{/U}}of
installed fiber, which was estimated to be 3.2 million kilometers in the U.S.
alone by the end of 1987. Over 90% of this fiber was placed.{{U}} (53)
{{/U}}during the time period of 1982—1987. Long-haul trunk
installations(长途干线设施) have dominated,{{U}} (54) {{/U}}for about 95% of
the fiber in the U.S. In the early 1950s the researchers who produced the first clad glass optical fibers were not{{U}} (55) {{/U}}of using them. for communications.{{U}} (56) {{/U}} , fiber optics was already a well-established commercial technology whe A. conveyed B. transformed C. converted D. shifted [单项选择]CT检查前，病人准备工作的主要依据是：（）
A. 申请单 B. 预约登记卡 C. 对家属的交待 [单选题]直、结肠家族性多发性腺瘤样息肉是( )
A.良性肿瘤 B.癌前病变 C.恶性肿瘤 D.原位癌 E.早期癌 [多选题]生产经营建设活动中发生人身伤亡事故（含险肇事故）必须（ ）。
A.调查 B.处理 C.了解 D.掌握 E.控制 [单选题]办理变径时，原票价高于变更后的径路票价时，（ ）。
A.持原票乘车有效，差额部分不予退还。 B.持原票乘车有效差额部分予以退还免收手续费 C.持原票乘车有效差额部分予以退还核收手续费 D.退还票价差额持原票使用有效 [多选题]金融企业聘用的会计师事务所要具备的基本资质以下正确的为（）
A.在中国境内依法注册成立2年及以上，由有限责任制转为特殊的普通合伙制或普通合伙制的会计师事务所，延续转制前的经营年限 B.具有固定的工作场所，组织机构健全，内部管理和控制制度较为完善并且执行有效 C.具有良好的执业质量记录，按时保质完成审计工作任务，在审计工作中没有出现重大审计质量问题和不良记录，具备承担相应审计风险的能力 D.具有良好的职业道德记录和社会声誉，认真执行有关财务审计的法律、法规和政策规定 [填空题]______ (通过熬夜工作)that we managed to complete our task.
[单选题]采用单导线的输电线路，一个耐张段的长度一般采用（ ）。
A.A-不宜大于10km B.B-不宜大于12km C.C-不宜大于2km D.D-不宜大于5km [多选题]工作负责人的安全责任为（）。
A.检查电力通信工作票所列安全措施是否正确完备，是否符合现 场实际条件，必要时予以补充完善。 B.工作前，对工作班成员进行工作任务、安全措施和风险点告知，并确认每个工作班成员都已清楚并签名。 C.确认所派工作负责人和工作班人员是否适当、充足。 D.监督工作班成员遵守本规程，执行现场安全措施，正确使用工 器具、仪器仪表等。 [单项选择]建筑登高架设作业人员要（）进行体检，以避免由于健康原因发生安全事故。
A. 不定期 B. 定期 C. 专门 [判断题]断面的种类分为移出断面和不重合断面。( )
A.正确 B.错误 [判断题]员工受到开除处分的，单位须按相关规定征求本单位工会组织的意见，履行程序后解除与其签订的劳动合同。不得再次录用为公司系统内员工。
A.正确 B.错误 [简答题][2022-03-06 17:53:38.208
[单项选择]报纸提醒 (28) 投资寿险时要理智地购买保险商品，要 (29) 地认识自己的需要，再 (30) 了解商品的特点；最好多听多看，多多加以 (31) ；还要选择信得过的保险公司， (32) 还要留意哪家的服务更适合自己。
A. 同时 B. 再说 C. 况且 D. 何况 [不定项选择题]凡直接从事带电作业的劳动者，必须()，防止发生触电事故。
A.穿绝缘鞋 B.戴绝缘手套 C.劳保鞋 D.防护服 E.以上都对 [单选题] 在脱吸塔底通入水蒸汽,与溶液逆流接触,将溶质从塔顶带走,从而分离吸收后的溶液,并得到回收的溶质,这一方法称为( )。
A.闪蒸 B.汽提 C.脱吸 D.蒸发 [单选题]双线自动闭塞区间正方向，第一闭塞分区空闲，越出站界调车时，须经( )口头准许并通知司机后， 方可出站调车。
A.列车调度员 B.车站值班员 C.车站调度员 D.邻站车站值班员 [单选题]促红细胞生成素的作用是促进( )
A.小肠吸收维生素B12 B.血库释放红细胞 C.睾丸分泌雌激素 D.骨髓造血 E.促进小肠吸收铁和蛋白质 [多选题]African elephants have been slaughtered at alarming rate over the past decade, largely because they are the primary source of the world's ivory． Their population has been dwindled from 1．3 million in 1979 to just 625,000 today, and the rate of killing has been accelerating in recent years because many of the older, bigger tusked animals have already been destroyed． "The poachers now must kill times as many elephants to get the same quantity of ivory," explained Curtis Bohlen, Senior vice president of the World Wildlife Fund．
Though its record on the environment has been spotty so far, the government last week took the lead in a major conservation issue by imposing a ban on ivory imports into the US． The move came just four days after a consortium of conservation groups, including the World Wildlife Fund and Wildlife Conservation International, called for that kind of action, and it made the US the first nation to forbid imports of both raw and finished ivory． The ban, says Bohlen, sends a very clear message to the ivory poachers that the game is over．
In the past African nations have resisted an ivory ban, but increasingly they realized that the decimation of the elephant herds poses a serious threat to their tourist business． Last month Tanzania and several other African countries called for an amendment to the 102 nation Convention on International Trade in Endangered Species that would make the ivory trade illegal worldwide． The amendment is expected to be approved at an October meeting in Geneva and to go into effect next January． But between now and then, conservationists contend, poachers may go on a rampage, killing elephants wholesale, so nations should unilaterally forbid imports right away． The US government brought that argument, and by week's end the twelve nation European Community had followed with its own ban．
What's the author's attitude?
A.Subjective B.Neutral C.Pessimistic D.Activ [填空题]Library is the place where many books are kept. They are of various kinds and can provide information people want. But if you don’t know how to find books in the library, you may spend a lot of time in looking for the book you want. But something can, solve your problem. That is the catalogue in the library. When you want to see if a library has the book you want, you can use the catalogue in the library. Most catalogues of books in a library take the form of small cards kept in boxes. One way of arranging the cards is in ABC order by the family names of the writers.
Catalogue cards usually give the following important information: (1) the name of the writer; (2) the shelf-mark, that is, the Dewey number which helps people to find where the books are, (3) the title of the book, (4) the year of publication and the publisher, and (5) the number of pages in the book. Using the catalogue, you can find the book you want quickly. The libr [单项选择]下列可用来评估方法的准确度的试验是（）
A. 干扰试验 B. 重复试验 C. 回收试验 D. 方法比对 E. 线性评价 我来回答: 提交
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