Plastic is the panacea of the ages. Nearly every man-made object (1) (2) of, or at least (3) its very structure, to this wonder compound. Rain slickers, computer terminals, automobile engine parts, coffee cups (and the sugar stirrers too), breast implants, toy soldiers--they are all made up of plastic, or one of its many (4) . Since the (5) of civilization, humankind has been experimenting (6) a multifunctional material--one that had to be equally strong and lightweight--to carry, contain and protect valuables. (7) it could carry, contain and protect humans too, even Better. Generations of tinkerers and scientists set off (8) the challenge, striking gold some 170 years ago. By mixing natural rubber with sulphur they created the world’s most utilized material ever. In developing a (9) , malleable and durable substance, the most important inventions of the industrial age were to follow shortly thereafter. The au
A. stream
B. torrent
C. current
D. flow
| Text 3 Although social changes in the United States were being wrought throughout most of the nineteenth century, public awareness of the changes increased to new levels in the 1890’s. The acute, growing public awareness of the social changes that had been taking place for some time was tied to tremendous growth in popular journalism in the late nineteenth century, including growth in quantity and circulation of both magazines and newspapers. These developments, in addition to the continued growth of cities, were significant factors in the transformation of society from one characterized by relatively isolated self-contained communities into an urban, industrial nation. The decade of the 1870’s, for example, was a period in which the sheer number of newspapers doubled, and by 1880 the New York Graphic had published the first photogra A. the closing of newspapers that did not use photographs B. newspapers’ becoming more expensive C. an increase in the number of people reading newspapers D. a reduction in the cost of advertising [判断题]( )停泵水击是指水泵机组突然停电或其他原因造成关阀停机,在水泵及管路中水流速度发生递变而引起的压力递变现象。
A.正确 B.错误 [单选题]停放制动监控回路的建立条件是（）继电器得电
A.43-K27 B.43-K28 C.43-K14 D.43-K15 [简答题]配网带电作业应着重防护哪种危害？
[单项选择]广西最年轻的设区市是（）。
A. 防城港市 B. 崇左市 C. 来宾市 D. 贺州市 [判断题]差动保护的优点是：能够迅速地、有选择地切除保护范围内的故障。( )
A.正确 B.错误 [单选题] 刘某是聋哑人,涉嫌盗窃,公安机关对其询问时,应当( )。
A.有见证人到场 B.有通晓手语的人进行 C.有通晓手语的人提供帮助,并在笔录上注明 D.有监护人在场 [填空题]新建通航桥梁通航孔跨桥墩应设置<--NRC-->，既有通航桥孔不符合规定时，应结合具体情况逐步改造。
[单选题]在起重过程中,起重物尚未垫妥架稳前,操纵人员不得离开岗位,身体( )不得探入起重物下方。
A.头 B.手 C.脚 D.任何部位 [单项选择]Companycom is planning for a 64-way p5 595. The plan is to use Virtual IO Servers and micropartitioning. What is the maximum number of partitions they can allocate?（）
A. 128 B. 254 C. 320 D. 640 [单选题]变压器原边电压，在额定电压的( )以内时其容量不变。
A.±5% B.0.05 C.-0.05 D.±6% [多选题]因委托方过失而需对检测报告中的来样信息进行更改的，送样人需向检测机构提交（ ）盖章和有关人员签名的证明文件。
A.A、建设单位 B.B、设计单位 C.C、施工单位 D.D、监理单位 [单项选择] You are connecting to an Oracle database server from a client by using the following connect string： SQL> CONNECT hr/hr@pdserver.us.oracle.com：1521/proddb Which naming method is being used in this case？（）
A. Local Naming B. Easy Connect C. External Naming D. Directory Naming [单选题]乳牙根尖病治疗方法为
A.根管治疗术 B.活髓切断术 C.干髓术 D.直接盖髓 E.变异干髓术 [单项选择]期货公司的股东及实际控制人质押所持有的期货公司股权的，应当在( )日内通知期货公司。
A. 2 B. 3 C. 20 D. 30 [多选题]BoEing投资理财业务客户签约时可以选择开通渠道。除系统默认的渠道外，个人可以开通的渠道包括（）。
A.电话银行 B.网银渠道 C.掌上银行 D.自助机具 [填空题]Large companies need a way to reach the savings of the public at large. The same problem, on a smaller scale, faces practically every company trying to develop new products and create new jobs. There can be little hope of raising the money needed from friends and people we know, and while banks may agree to provide short-term finance, they are generally unwilling to provide money, for long-term projects. So companies turn to the public’ inviting people to lend them money, or take a share in the business in exchange for a share in future interests. This they do by issuing stocks and shares in the business through the Stock Exchange. By doing so they can put into circulation the savings of single persons and institutions, both at home and abroad.
When the saver needs his money back, he does not have to go to the company with whom he originally placed it. Instead he sells his shares through a stockbroker to some other Saver who is seeking to invest his money. Many of the [单选题]患者女，61岁。近半月阴道出血，色深红，质稠，带下增多，色黄，有臭味，口苦口干，小便短赤，大便秘结，舌红，苔黄，脉弦滑。其证候是
A.脾虚肝郁证 B.肾阴虚证 C.湿热下注证 D.血热证 E.湿毒瘀结证 [单项选择]临床上使用的基托材料主要为热凝和自凝基托材料两种，其在组成，性能及应用上都有不同。
自凝基托树脂与热凝基托树脂组成上的主要区别是 A. 牙托粉中是否含有机叔胺 B. 牙托水中是否含有机叔胺 C. 牙托水中是否含阻聚剂 D. 牙托水中是否含交联剂 E. 牙托粉中是否含共聚粉 [单选题]按桥梁长度分类，桥长100m以上至500m的桥梁为（ ）。【铁路职工岗位培训教材桥隧工第一章第一节P3】
A.特大桥 B.大桥 C.中桥 D.小桥 [单项选择]电火花加工过程中，正负两极之间的放电间隙一般为（）。
A. 0.1mm B. 0.1m C. 0.1um D. 10um [判断题]对邻近的人与物有坠落危险性的其他竖向孔、洞口，均应予以盖没或加以防护，并有固定其位置的措施。 ( )
A.正确 B.错误 [单选题]提出了层累地造成的中国古代史学说的古史辩派的代表人物是（ ）。
A.胡适 B.王国维 C.陈寅恪 D.顾颉刚 [单选题]目前临床上检测HBsAg主要采用
A.间接免疫荧光法 B.直接免疫荧光法 C.ELISA D.比浊法 E.免疫印迹法 [判断题]盘车机构主要用于盘车检查柴油机运动部件的运动状态。( )
A.正确 B.错误 [多选题]处置带有政治性目的、恐怖性劫机事件的基本原则包括（ ）。
A.安全第一 B.统一指挥 C.力争境内处置 D.机长有最后处置权 [简答题]VPN的密码是?
[判断题]CCBII制动机的自动制动手柄（大闸）和单独制动手柄（小闸）是位置闸。
A.正确 B.错误 [判断题]（ ）开通区间的调度命令，不需要向司机转抄。
A.正确 B.错误 [多选题]加强职工用电普查,对于职工( )要严肃追究责任。(国家电网公司关于进一步加强营销专业线损管理工作的通知)
A...私拉线路 B...无表用电 C...违约用电 D...窃电行为 [单选题]在太阳能光伏发电系统中，太阳电池方阵所发出的电力如果要供交流负载使用的话，实现此功能的主要器件是（ ）。
A.稳压器 B.逆变器 C.二极管 D.蓄电池 [多项选择]有关石骨症描述正确的是（）
A. 病理基础为正常破骨活动减弱 B. 下颌骨很少累及，颅盖骨亦较轻 C. 下颌骨和颅盖骨也明显受累 D. X线表现为骨骼硬化区骨结构消失、骨成型收缩差，骨干增粗 E. 夹心椎、年轮状髂骨及骨中骨为较特异征象 [判断题]测量电源电流时是将电流表并联在电路中
A.正确 B.错误 我来回答: 提交
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