热门试题:
[单项选择]下列关于运算符重载的描述中，正确的是( )。
A. 运算符重载可以改变运算符的操作数的个数
B. 运算符重载可以改变优先级
C. 运算符重载可以改变结合性
D. 运算符重载不可以改变语法结构
[单选题] 下列哪种单体适合进行阳离子型聚合反应( )
A.聚乙烯
B.聚丙烯
C.聚丙烯腈
D.聚氯乙烯
[单选题](判断题)《煤矿安全规程》规定，维修倾斜井巷时，应当停止行车。需要通车作业时，必须制定行车安全措施。在措施允许的情况下方可上、下段同时作业。（）
A.正确
B.错误
[单选题]受压容器的安全阀应保证压力容器具有( )倍的安全系数。
A.1.2倍
B.1.3倍
C.1.4倍
D.1.5倍
[判断题]《铁路旅客运输办理细则》中规定，车票是旅客乘车的凭证，同时也是旅客加入铁路旅客意外伤害强制保险的凭证。（）
A.正确
B.错误
[单选题]60kg/m及以上钢轨，基本轨垂直磨耗：在容许速度大于120km/h的正线上超过（ ）时，应及时修理或更换。
A.5mm
B.6mm
C.7mm
D.8mm
[填空题]
The temperature of the Sun is over 5000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees at the center. The Sun is so much hotter than the Earth that matter can exist only as a gas, except at the core. In the core of the Sun, the pressures are so great against the gases that, despite the high temperature, there may be a small solid core. 41) __________.
Solar astronomers do know that the Sun is divided into five layers or zones. Starting at the outside and going down into the Sun, the zones are the corona, chromosphere, photosphere, convection zone, and finally the core. 42) __________. But since’ the Sun has no solid surface, it is hard to tell where the atmosphere ends and the main body of the Sun begins.
43) __________. This is the only part of the Sun that can be seen during an eclipse such as the one in February 1979. At any other time, the corona can be seen only when special instruments are used on cameras and te
[单选题]200H车载设备RLU单元RLY8-18A板CHR红灯亮，表示（ ）
A.A、设备正常
B.B、设备故障
C.C、设备正在通信
D.D、设备记录状态
[判断题]对发生事故事件或违章的相关单位，所在党组织于本季度内召开专题组织生活会进行剖析。对发生严重“三违”的相关单位，要召开专题民主生活会进行深刻剖析、问责追责、整改到位，并将违章整改情况纳入党建考核。
A.正确
B.错误
[多选题]6号线ATS接触网状态显示有几种状态（ ）。
A.绿色
B.灰色
C.紫色
D.红色
[单项选择]男性，59岁，排鲜血便伴肛门坠胀6个月，近1个月来排脓血样便，疑有肿瘤。首先要进行的检查是
A. 腹部B超
B. 钡剂灌肠X线检查
C. 乙状结肠镜检
D. 直肠指检
E. 肛镜检查
[单选题]困难情况下，通行普通汽车城市道路紧接道口平台的道路最大纵坡不应（ ）。
A.大于0.5%
B.大于5%
C.小于0.5%
D.小于5%
[单项选择]去甲肾上腺素用于治疗：
A. 皮肤黏膜过敏性疾病
B. 神经性休克早期
C. 支气管哮喘
D. 高血压病
E. 肾功能衰竭
[多选题]工程建设标准强制性条文中《重力式码头设计与施工规范》JTS 167-2-2009第2．3．3条规定，重力式码头抛石基床的厚度应遵守的规定有（ ）。
A.当基床顶面应力大于地基承载力时，由计算确定，并不小于1．0m
B.当基床顶面应力大于地基承载力时，由计算确定，并不小于2．0m
C.当基床顶面应力不大于地基承载力时，不小于0．5m
D.当基床顶面应力不大于地基承载力时，不小于1．0m
E.无论基床顶面应力大于地基承载力还是不大于地基承载力，均必须由计算确定，并不小于2．0m
[判断题]核心资本率的计算公式为：（核心资本-核心资本扣除项）/（风险加权资产＋10.5倍的市场风险资本）。
[多选题]依据《数据安全法》，国家支持有关部门、行业组织、企业、教育和科研机构、有关专业机构等在数据安全风险（ ）等方面开展协作。
A.评估
B.研究
C.防范
D.处置
[单项选择]患者，女，30岁；带下量多，色白，质稀薄如涕，无臭；面黄倦怠，纳少便溏；舌淡体胖，苔白稍腻，脉细。方宜首选（）
A. 内补丸
B. 止带方
C. 易黄汤
D. 补中益气汤
E. 完带汤
[简答题]列车按轨道电路分路不良要求办理行车时，车站应执行哪些规定？
[多项选择]有下列哪种情况时，必须加装工作接地线或使用个人保安线？（）
A. 因设备平行布置导致检修设备可能产生感应电压时
B. 工作人员的工作地点不能直接看到接地线时
C. 因检修设备邻近带电设备导致检修设备可能产生感应电压时
D. 站内工作地点与所装接地线的距离大于10m时
[判断题]电力系统内部过电压的幅值基本上与电网工频电压成正比。（ ）[1.0分]
A.正确
B.错误
[单选题]“KAX-1客车行车安全监测诊断系统”车厢级网络系统将()的车辆参考速度变量传送给车门监测节点和车辆转向架状态监测节点,作为两节点的诊断条件。
A.轴温报警器
B.烟火报警器
C.TCDS
D.电子防滑器
[单项选择]下面哪一条不是管理对信息和信息处理的要求( )。
A. 准确性
B. 可维护性
C. 及时性
D. 经济性
[单项选择]甲公司向乙公司签发金额为200万的商业承兑汇票，则（）。
A. 甲公司事先必须在银行有200万的存款
B. 甲公司必须在签发汇票后的10日内向银行提供200万元的付款保证金
C. 汇票到期日时甲公司存款余额不足支付的，该汇票无效
D. 只要在汇票到期时能支付200万元即可
[单选题]小儿末梢血白细胞分类，中性粒细胞和淋巴细胞的比例发生两个交叉的年龄是( )
A.4天~6天和4岁~6岁
B.4天~6天和4月~6月
C.4周~6周和4月~6月
D.4周~6周和4岁~6岁
E.4月~6月和4岁~6岁
[不定项选择题]共用题干
第二篇
Electric Backpack
Backpacks are convenient. They can hold your books,your lunch,and a change of clothes,leaving your
hands free to do other things.Someday,if you don't mind carrying a heavy load,your backpacks might also
power your MP3 player,keep your cell phone running,and maybe even light your way home.
Lawrence
C.Rome and his colleagues from the University of Pennsylvania in Philadelphia and the
Marine Biological Laboratory in Woods Hole,Mass.,have invented a backpack that makes electricity from
energy produced while its wearer walks.In military actions,search-and-rescue operations,and scientific field
studies,people rely increasingly on cell phones,global positioning system(GPS)receivers,night-vision
goggles,and other battery-powered devices to get around and do their work. The backpack's electricity-generating
feature could dramatically reduce the amount of a wearer's load now devoted to spare batteries,report Rome
and his colleagues in the Sept.Science.
The backpack's electricity-creating powers depend on springs used to hang a cloth pack from its metal
frame.The frame sits against the wearer's back,and the whole pack moves up and down as the person
walks.A gear mechanism converts vertical movements of the pack to rotary motions of an electrical generator,
producing up to 7.4 watts.
Unexpectedly tests showed that wearers of the new backpack alter their gaits in response to the pack's
oscillations,so that they carry loads more comfortably and with less effort than they do ordinary backpacks.
Because of that surprising advantage,Rome plans to commercialize both electric and non-electric versions of
the backpack.
The backpack could be especially useful for soldiers,scientists,mountaineers,and emergency workers
who typically carry heavy backpacks.For the rest of us,power-generating backpacks could make it possible to
walk,play video games,watch TV,and listen to music,all at the same time.Electricity-generating packs
aren't on the market yet,but if you do get one eventually,just make sure to look both ways before crossing
the street!
According to Paragraph 4,what does Rome plan to do?
A.To make the backpack more comfortable for the wearer.
B.To put the backpack on the market.
C.To test the advantage of the backpack.
D.To promote the backpack in a newspaper or on television.
[单选题]曲线半径R<195线路，曲线轨距加宽值为（ ）。
A.A . 0mm
B.B 5mm
C.C 10mm
D.D 15mm
E.略
[单项选择]常温型橡胶支座的适用温度为（）。
A. -20℃—40℃
B. -25℃—40℃
C. -25℃—60℃
D. -20℃—60℃
[判断题]用于保证检修工作安全及提供个人劳动保护的用具是一般防护安全用具。
A.正确
B.错误
[单选题]抽出的药液、静脉输入液体及溶媒什么情况下不能使用
A.抽出的药液、静脉输入液体超出2小时、启封抽出的各种溶媒超过24小时者
B.抽出的药液、静脉输入液体未超出2小时者
C.启封抽出的各种溶媒在24小时之内
D.抽出的溶媒、开启的静脉输入无菌液体须注明启用日期、时间
[多选题]TVM的维护主要包括的主功能项( )注：AFC专业知识（部件）
A.结账操作.
B.日常操作.
C.查询操作.
D.测试操作
E.管理操作.数据操作和注销。
[单项选择]不属于成瘾行为的戒断症状主要有（）
A. 空虚
B. 不安
C. 呼吸急促
D. 贪食
E. 寻死觅活
[多选题]54
A.半双工对讲
B.指挥调度
C.地图
D.定位
[判断题]格氏试剂很活泼,能与水、醇、氨、酸等含活泼氢的化合物反应分解为烃,但对空气稳定。 ( )
A.正确
B.错误
