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The Development of Rubber Here is the story of rubber. From the earliest time it was common knowledge {{U}} (51) {{/U}} the Peruvians that when a cut was made in the outside skin of a rubber tree, a white liquid {{U}} (52) {{/U}} milk came out, and that {{U}} (53) {{/U}} this a sticky (粘的) mass of rubber might be made. This rubber is soft when warm, so that it is possible to give it any {{U}} (54) {{/U}}. The Peruvians made the {{U}} (55) {{/U}} that it was very good for keeping out the wet. Then in the early 1800’s, the Americans made use of it for the first time. First they made overshoes to {{U}} (56) {{/U}} their feet dry. Then came a certain Mr. Mackintosh, who made coats of cloth covered with natural rubber. From that day to this we have been coating cl A. experiments B. checks C. discoveries D. works [填空题]为了保证安全，电吹风使用前应先检查电吹风（）是否良好。
[单项选择]19世纪末，美国政府提出“门户开放”政策。100多年后的今天，美国仍以“自由通过”为名在我国近海频繁进行侦察飞行，对我国的国家安全构成了威胁。这表明( )。
A. 美国坚持霸权主义和强权政治 B. 美国奉行政治经济全球化政策 C. 美国坚持“门户开放”政策 D. 美国是当今世界上唯一的“超级大国” [多选题]为便于对测量结果进行分析，在测量时记录被测物的绝缘电阻外，还应记录对测量有影响的其他因素，这些因素可能包括（____）。
A.环境温度 B.湿度 C.使用的绝缘电阻表的电压等级及量程范围 D.测量日期 [单项选择]使用双电极法可迅速并正确的显示（）的运行终点。
A. 钠离子交换器 B. 阳离子交换器 C. 阴离子交换器 D. 混合离子交换器 [单项选择]法国亚眠大教堂是（）建筑。
A. 罗曼式 B. 巴洛克式 C. 哥特式 [单选题]在LTE系统中，调度功能由调度器完成，调度器位于eNode B的()层
A.RLC B.PHY C.PDCP D.MAC [单项选择]国内银行在推出理财计划时，一般会对投资者进行风险提示。假如A银行推出人民币债券理财计划，则其应主要进行( )提示。
A. 汇率风险和利率风险 B. 汇率风险和信用风险 C. 市场风险和流动性风险 D. 流动性风险和再投资风险 [判断题]测回法测角计算角值时,应用大的读数减去小的读数。( )
A.正确 B.错误 [单选题]梁某,女性,62岁。诊断为直肠癌。检查癌肿距离齿状线约3cm,宜选择手术
A.Dixon手术 B.Miles手术 C.Bassni手术 D.Hastam手术 E.R-Y手术 [判断题]依据《中国南方电网有限责任公司电力安全工作规程》，低压不停电工作前，应采取绝缘隔离、遮蔽带电部分等防止相间或接地短路的有效措施；若无法采取遮蔽措施时，则将影响作业的带电设备停电。
A.正确 B.错误 [单选题]患者女，38岁，右上肺肿瘤切除术，术中生命体征正常，术后安返病房，前置胸腔引液管、尿管，该患者的护理级别是
A.特级护理 B.三级护理 C.一级护理 D.专人护理 E.二级护理 [单选题]通常所说的衰减是表示（ ）。
A.A. 检测显示的特征 B.B. 被检测材料的系数 C.C. 探头特性 D.D. 探伤方式 [单选题]单相桥式可控整流电路电感性负载无续流管,控制角α=30°时,输出电压波形中( )。
A.不会出现最大值部分 B.会出现平直电压部分 C.不会出现负电压部分 D.会出现负电压部分 [判断题]遇上发生火灾，应躲在有新鲜空气的窗户边等待救援。
A.正确 B.错误 [填空题]中继阀管座上有列车管,总风缸管,中均管,过充管,( )共五根管。
[单选题]不能与二甲苯相容的是（ ）。
A.乙醚 B.水 C.乙醇 D.氯仿 [单选题]女,50岁,活动后胸闷1年,夜间阵发性呼吸困难4天。查体:血压130/80mmHg,第二心音亢进,心尖部可闻及舒张期隆隆样杂音,余瓣膜未闻及杂音。该患者最易出现的心律失常是()
A.三度房室传导阻滞 B.室.上性心动过速 C.心房扑动 D.室性心动过速 E.心房颤动 [单选题]收费工班交接时本班结存的可正常使用的 CPC 卡应转交给（ ）并做好交接记录。
A.车道 B.班长 C.下班次 [多选题]灭火的主要灭火的机理是（ ）。
A.A.减少可燃物 B.B.降低温度 C.C.降低氧浓度 D.D.降低燃点 [单选题]生产、储存、经营易燃易爆危险品的场所与居住场所设置在同一建筑物内的,应当()。
A.罚款 B.不予处罚 C.责令限期改正 D.责令停产停业并处罚款 [判断题]事故紧急抢修工作，指电气设备发生故障被迫紧急停止运行，需按计划恢复的抢修和排除故障的工作。
A.正确 B.错误 [单项选择]肝细胞性黄疸（ ）
A. 结合胆红素升高 B. 非结合胆红素升高 C. 两者都升高 D. 两者都不升高 E. 不一定 [不定项选择题]共用题干
Stomach Ulcer
Stomach ulcers are the cause of severe pain for many people. Doctors have been able to help lessen the pain of ulcers. They could not cure them.Now doctors have discovered a cause of ulcers .This means they may have found a way to cure people who suffer from the stomach pain. Studies show that ten percent of the population will develop an ulcer at some time in their life. So a possible cure is good news for many people. Ulcers are wounds in the stomach that are similar to small cuts or tears.These wounds can harm the tissue in the stomach,the pipe that carries the food to the stomach or parts of the small intestines .Fluids in the stomach then increase the pain of an ulcer. How does a person know he or she has an ulcer? Doctors say most people with ulcers feel a burning pain in their chest or stomach .This pain often is called heart burn. It usually happens before eating or during the night. It causes some people to lose their desire to eat,or they are unable to keep food in their stomachs. Doctors believed that ulcers were caused by unusually strong stomach fluids,which damaged stomach tissue. Now they have discovered that most ulcers are caused by a bacterial organism called Hillico Bactor Pilorie or H .Pillorie .H .Pillorie bacteria are what make stomach produce extra stomach fluid.Doctors found that they can kill the bacteria with medicines called antibiotics .Health experts say the discovery of a cure for ulcers can save thousands of millions of dollars in medical costs. They also believe curing ulcers will reduce the number of people who develop stomach cancer. The number of people with stomach cancer is very high in Japan,Southeast Asia and parts of Africa. Doctors say a person is more likely to get an ulcer if his or her family has had one.In fact a person with the family history of ulcers is three times more likely to get one than other people. There are ways people can protect themselves from developing an ulcer. Doctors say it is more important to reduce the amount of strong fluids in the stomach .To do this,doctors say,people should not smoke cigarettes or drink alcohol. And they say people should reduce tension in their lives. Stomach ulcer can lead to stomach cancer. A.Right B.Wrong C.Not mentioned [单选题]作业人员在20.35KV电压等级的安全距离为(B)m——[单选题]
A. 0.35 B. 0.6 C. 1.5 D. 3 [判断题]对于大型数据中心机房，提倡采用几个中等容量的UPS系统分散供电代替单一大容量UPS系统集中供电。
[填空题]X6123型铣床工作台与纵向丝杠之间的间隙是通过调整（）的间隙来实现的。
[单选题]联系、登（销）记办法及标准用语，由（）制定。
A.铁路局（公司） B.铁路总公司 C.电务段 D.现场车间 [单选题]( )是电子商务的基础,是商务、业务信息传送的载体。
A.Intranet B.Extranet C.WWW D.Internet [单项选择]About a month ago I was present on a serious occasion where I heard the reading of a will. I can remember one passage that particularly struck me. It ran something (56) this.
"And I direct that $ 10,000 be (57) to old William B, whom I have wished to help for many years, (58) always put off doing so." It (59) the last words of a dying man. But the story does not (60) there. When the lawyers came to (61) out the bequest (遗赠), they discovered that old William B had (62) , too, and so the (63) deed was lost. I felt rather (64) about that. It seemed to me a most regrettable. (65) that William should not have had his $10,000 just (66) somebody kept putting (67) giving it to him. And from (68) accounts, William could have done with the (69) . But I am sure (70) there are thousands of kindly little deeds waiting to be (71) today, which are being put off (72) later A. remain B. end C. finish D. appear [多选题]违章用电的日数及时间的计算,均以实际使用时间为准。倘不能提出确切资料证明时,动力、电热负荷每日按（ ）,照明负荷每日按（ ）,至少（ ）按计算。
A.十二小时 B.六小时 C.三个月 [单选题]试车线首趟往返限速（ ）km/h。
A.15 B.20 C.25 D.30 [单选题]高压电气设备都应安装完善的（ ）
A.电气闭锁 B.电磁闭锁 C.微机型防误闭锁 D.防误操作闭锁装置 [判断题]未列入工作计划的临时计划，在全体作业人员知晓危险点和控制措施的情况下，可以进行作业，无需通知设施运维单位。
A.正确 B.错误 [简答题]输油泵机组监控装置应具有哪些指标？
[单选题]题干:患者女性,62岁。绝经12年,近3
个月阴道出血2次,每次持续4天。妇科 检查:外阴,阴道无萎缩,宫颈光柑,子宫 前位,正常大小,右侧附件区 10cm×5cm×3cm肿物,质地中等,光滑, 实性,活动良好,无腹水,全身淋巴结无 转移。 该患者最可能患了 A.子宫内膜癌 B.卵巢颗粒细胞瘤 C.卵巢无性细胞瘤 D.卵巢畸胎瘤 E.卵巢睾丸母细胞瘤 [单项选择]目标成本法的价格传递机制是针对（）而言的。
A. 具体产品和零部件层次 B. 具体产品和功能层次 C. 具体功能和零部件层次 D. 具体组装和零部件层次 [单选题]在分光光度法中,参比溶液的作用是( )。
A.调节仪器的零点 B.调节入射光的波长 C.消除溶剂和试剂等非测定物质对入射光吸收的影响 D.调节入射光的强度 我来回答: 提交
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