热门试题:
[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》禁止约时停、送电。( )
A.正确
B.错误
[单项选择]甲、乙、丙三个寿命期相等的互斥方案的投资分别为300万元、200万元、100万元，内部收益率分别为9%、14%、16%，基准收益率为10%，乙和丙两个方案的差额内部收益率为13%，则（）。
A. 甲方案为最优方案
B. 乙方案为最优方案
C. 丙方案为最优方案
D. 无法判断出最优方案
[单项选择]某一餐馆采购员感染上了O157：H7大肠杆菌而出现轻度腹泻，排菌阳性，不久与餐馆有过关系的一些人发生该病，并向四周传播，少数重病人出现肾溶血性尿毒综合征。出现肾溶血性尿毒综合征的患者不具备的症状是（）
A. 腹痛、腹泻、血性便
B. 面红、颈红、上胸部充血
C. 微血管异常溶血性贫血
D. 血小板减少症
E. 急性肾衰征象
[判断题]遇机车综合无线通信设备未接收到接车进路预告信息时，司机须报告车站值班员（列车调度员），车站值班员（列车调度员）应将进路信息及时通知司机。
A.正确
B.错误
[多选题]一个网络项目不能单独存在,需要相关系统的配合,那么配套工程通常都包括? (多选)
A.供电系统
B.空调设备
C.交通工具
D.办公设备
E.弱电布线
[判断题]接触网是电气化铁路上的主要供电装置。( )
A.正确
B.错误
[单项选择]
患者，男性，60岁，以间歇性无痛性全程肉眼血尿2周来院就诊，经B超及膀胱镜检查证实，膀胱右侧壁有一个直径2.5cm大小的占位病变，收入院诊治。
治疗原则是（ ）
A. 化疗
B. 放疗
C. 手术治疗
D. 局部化疗
E. 冷冻治疗
[单项选择]
By the mid-nineteenth century, the term "icebox" had entered the American language, but ice was still only beginning to affect the diet of ordinary citizens in the United States. The ice trade grew with the growth of cities. Ice was used in hotels, taverns, and hospitals, and by some forward-looking city dealers in fresh meat, fresh fish and butter. After the Civil War (1861-1865), as ice was used to refrigerate freight cars, it also came into household use. Even before 1880, half the ice sold in New York, Philadelphia, the Baltimore, and one-third of that sold in Boston and Chicago, went to families for their own use. This had become possible because a new household convenience, the icebox, a precursor of the modem refrigerator, had been invented.
As early as 1803, and ingenious Maryland farmer, Thomas Moore, bad been on the fight track. He owned a farm about twenty miles outside the city of Washington, for which the village of Georgetown was the market center.
A. the road to the market passed close to Moore’s farm
B. Moore was an honest merchant
C. Moore was a prosperous farmer
D. Moore’s design was fairly successful
[单选题]超声波到达两个不同材料的界面上，可能发生 ( )。
A.反射、折射及波形转换
B.透射
C.散射
D.以上三种都可能
[单项选择]某商贩7年共偷税、漏税13万元，被公安机关依法逮捕。此案例说明( )。
A. 纳税义务具有强制性
B. 只有商贩才须纳税
C. 公民的权利义务由公安部门规定
D. 权利义务不具有一致性
[单项选择]In the case of mobile phones, change is everything. Recent research indicates that the mobile phone is changing not only our culture, but our very bodies as well.
First, let"s talk about culture. The difference between the mobile phone and its parent, the fixed-line phone, is that a mobile number corresponds to a person, while a landline goes to a place. If you call my mobile, you get me. If you call my fixed-line phone, you get whoever answers it.
This has several implications. The most common one, however, and perhaps the thing that has changed our culture forever, is the "meeting" influence. People no longer need to make firm plans about when and where to meet. Twenty years ago, a Friday night would need to be arranged in advance. You needed enough time to allow everyone to get from their place of work to the first meeting place. Now, however, a night our can be arranged on the run. It is no longer "see you there at 8", but "text me around 8 and we"ll see where we all are".
Texting changes people as well. In their paper, "Insights into the Social and Psychological Effects of SMS Text Messaging", two British researchers distinguished between two types of mobile phone users: the "talkers" and the "texters"—those who prefer voice to text messages and those who prefer text to voice.
They found that the mobile phone"s individuality and privacy gave texters the ability to express a whole new outer personality. Texters were likely to report that their family would be surprised if they were to read their texts. This suggests that texting allowed texters to present a self-image that differed from the one familiar to those who knew them well.
Another scientist wrote of the changes that mobiles have brought to body language. There are two kinds that people use while speaking on the phone. There is the "speakeasy": the head is held high, in a self-confident way, chatting away. And there is the "spacemaker": these people focus on themselves and keep out other people.
Who can blame them Phone meetings get cancelled or reformed and camera-phones intrude on people"s privacy. So, it is understandable if your mobile makes you nervous. But perhaps you needn"t worry so much. After all, it is good to talk.When people plan to meet nowadays, they ______.
A. arrange the meeting place beforehand
B. postpone fixing the place till the last minute
C. seldom care about when and where to meet
D. still love to work out detailed meeting plans
[判断题]吊弦线夹在直线处应保持铅垂状态,曲线处应垂直于接触线工作面。曲线处接触线吊弦线夹螺栓应穿向曲线外侧。( )
A.正确
B.错误
[单选题]CRH380A统型动车组车轮采用（ ）磨耗型踏面。
A.LMA
B.LMD
C.CN
D.XP55
[单项选择]下列有关酶的叙述，正确的是（）
A. 细胞质中没有作用于DNA的解旋酶
B. 酶只能改变化学反应速度，不影响化学平衡
C. 与光合作用有关的酶分布在叶绿体的内膜、基粒和基质
D. 酶的基本组成单位是氨基酸或脱氧核糖核苷酸
[多项选择]从交易头寸区分，期货市场中投机者可分为（）。
A. 大投机商
B. 多头空头者
C. 小投机商
D. 空头投机者
[判断题]电阻值不随电压、电流的变化而变化的电阻称为非线性电阻，其伏安特性曲线是曲线。
A.正确
B.错误
[单选题]能帮助老年人预防糖尿病和高血压的饮品是
A.水
B.豆浆
C.酸奶
D.红葡萄酒
E.绿茶
[单选题] 要素标识符一般由主代码、副代码、时段码与属性码四部分组成。编码格式是：主代码 [副代码] ［时段码］［属性码］，属性码是水文要素的（ ）标识符。
A.特征
B.本质
C.属性
D.性质
[判断题]使用喷灯的人员应熟悉喷灯使用方法。
A.正确
B.错误
[单项选择]关于黄疸的叙述中，下列哪一项是不正确的（）
A. 早产儿黄疸可延迟至第3周末
B. 足月儿于生后7～10天黄疸消退
C. 生理性黄疸在生后2～3天出现，于4～5天达高峰
D. 当血清胆红素>3mg/dl时肉眼才见黄疸
E. 早产儿宜予以提前光疗，预防胆红素脑病
[单选题]扑救石油化工企业和危险化学品仓库火灾时,消防车的作战位置应设在与燃烧区保持一定安全距离的( )方向。
A.上风
B.下风
C.侧下风
D.任意
[单选题]营业网点应至少每（）清点一次超级柜台银行卡余额，与生产系统中凭证余额核对，确保账实相符。
A.天
B.周
C.半个月
D.月
[配伍题]感染后病情最重的痢疾杆菌是（）|感染后病情较轻的痢疾杆菌是（）
A. 痢疾志贺菌
B. 福氏志贺菌
C. 宋内志贺菌
D. 鲍氏志贺菌
E. 舒氏志贺菌
[多选题]企业法人客户须具备的条件（ ）。
A.依法设立，并经市场监督管理局（或主管机关）核准登记，相关生产、经营资质符合国家有关规定
B.具有固定的经营场所或经营所需的生产资料，有明确的经营计划
C.遵纪守法，守信经营，无重大不良信用记录
D.具有合法可靠的经济来源，具备按合同约定偿还信贷资金及其孳息的能力，信贷资金用途合规
[单项选择]判断脱水性质最有效的辅助检查是（）。
A. 测量体重
B. 尿量
C. 血钠浓度
D. 血钾浓度
E. 二氧化碳结合力
[单项选择]除油罐停运时要先打开（）阀门，后关闭出入口阀门。
A. 排污
B. 收油
C. 旁通
D. 伴热
[填空题]安全标志是用以表达特定安全信息的标志,由图形符号、安全色、几何形状（ ）或文字构成,分为（ ）、（ ）、（ ）和（ ）4 大类型。
[填空题]机车旅行时间是指机车牵引列车从( )至到达终点站的全部时间。
[单选题]规定安全生产许可证制度的法律法规是（）。
A.《安全生产法》
B.《矿山安全法》
C.《安全生产许可证条例》
[多项选择]沟通和协调能力，影响和决定着每一个人的（）。
A. 生活幸福指数
B. 事业成就程度
C. 居民消费指数
D. 教育指数
E. 以上选项都有
[简答题]在自动闭塞的电气化区段上更换钢轨时,应遵守哪些规定?
[单选题]下列方法中属于热制冷食菜肴制作方法的是( )。
A.卤、醉、热炝和水煮
B.腌、酱、热炝和白煮
C.卤、拌、热炝和水煮
D.卤、酱、热炝和白煮
[判断题]造成1亿元以上直接经济损失为特别重大事故。
A.正确
B.错误
