热门试题:
[单项选择]共产主义的本质因素是（）
A. 实现生产资料公有制
B. 人民生活富裕
C. 实行按需分配
D. 人的自由而全面发展
[单项选择]The white working class are discriminated against because of their accent, style, food, clothes, postcodes and even their names, but not because they are white, according to a Runnymede Trust study.
The report, Who Cares about the White Working Class, disputes the (67) that white working class communities have been directly losing out to migrants and minority (68) groups. It says that commentators who (69) that white working class disadvantage is ethnic rather than a (70) of class does little to (71) the real sadness that poor white people in Britain (72)
The study followed a call from Hazel Blears, the communities secretary, for white working class voices and sadness to be (73) It says that after a decade of politicians and commentators (74) the issue of class, with Labor preferring to talk about "hard-working families" and "social exclusion (排斥)", class (75) is making an overdue comeback onto t
[单选题]三显示自动闭塞作用良好，监督器故障，办理特快旅客列车通过时，起行车凭证为( )。
A.出站信号机的绿色灯光
B.出站信号机的黄色灯光
C.绿色许可证
D.路票
[单选题]当R〈195m时，曲线轨距应加宽( )
A.0
B.5mm
C.10mm
D.15mm
[单项选择]某乡5000户约2万人口，欲抽其1/5人口进行某病调查，随机抽取1户开始后，即每隔5户抽取1户，抽到的户，其每个成员均进行调查。这种抽样方法为（）。
A. 简单抽样
B. 整群抽样
C. 系统抽样
D. 分层抽样
E. 多级抽样
[判断题]除特殊情况并经列车长同意的外，持低票价席别车票的旅客不能在高票价席别的车厢停留。
A.正确
B.错误
[单选题]键连接可分为（ ）连接、半圆键连接、楔键连接和切向键连接。
A.紧固
B.机械
C.平键
D.轴向
[判断题]鼓励其他生产经营单位聘用注册安全工程师从事安全生产管理工作。
A.正确
B.错误
[单项选择]关于采购订单中单价含税栏位说法正确的有（）
A. 此栏位由系统自动带出，不可修改
B. 此栏位系统根据供货商基本资料中单价含税设置自动带出
[判断题]变电站内开展计量验收等工作时，应要求施工方进行现场安全交底，做好相关安全技术措施，确认工作范围内的设备已停电、安全措施符合现场工作需要，明确设备带电与不带电部位、施工电源供电区域等
A.正确
B.错误
[单选题]同杆塔架设的多层电力线路停电后挂接地线时应()。
A.先挂低压后挂高压，先挂上层后挂下层
B.先挂低压后挂高压，先挂下层后挂上层
C.先挂高压后挂低压，先挂上层后挂下层
D.先挂高压后挂低压，先挂下层后挂上层
[单项选择]下列哪项是渗出液产生机制（）
A. 胸膜毛细血管通透性增加
B. 血浆胶体渗透压降低
C. 胸膜毛细血管静水压增高
D. 毛细血管胶体渗透压降低
E. 胸膜毛细血管静水压降低
[单选题]特殊基坑开挖作业时，更换挡泥板支撑应先拆后装。（ ）
A.A-正确
B.B-错误
C.略
D.略
E.略
F.略
G.略
[单项选择]在传统的集合运算中，关系R和关系S(t表示元组)的“差”的结果可表示为______。
A. t
B. t
C. R-(R-s)
[判断题]液压站高压油管断裂会喷出油不会伤人。（ ）
A.正确
B.错误
[单项选择]患者男性，36岁，呼吸困难，查体：心尖搏动减弱，心音遥远，有奇脉，该患者最可能是
A. 主动脉瓣关闭不全
B. 心肌病
C. 心包积液
D. 二尖瓣狭窄
E. 肺心病
[填空题]自动闭塞区段的车站，办理发车前应向接车站预告；单线自动闭塞区段的车站，还须得到____（列车调度员已下达列车运行调整计划时除外）。已向接车站预告，但列车不能出发时，发车站须通知接车站取消预告。
[多选题]当低压隔爆开关在运行中，电磁铁产生很大的噪声或吸力线圈过热而烧毁的可能原因有( )。
A.接触器动、静铁芯端面接触不良
B.动、静铁芯气隙过大
C.衔铁歪斜
D.短路环损坏
E.操作不灵活
F.略
G.略
H.略
[不定项选择题]A.青蒿鳖甲汤
A.半夏泻心汤
B.枳实消痞丸
C.四逆散
D.逍遥散
E.寒热平调、消痞散结的方剂是
[单项选择]盘状红斑狼疮在黏膜的好发部位是（）。
A. 颊黏膜
B. 下唇唇红黏膜
C. 牙龈
D. 舌黏膜
E. 硬腭黏膜
[单选题]06CG001234.依据《中国南方电网有限责任公司电力安全工作规程》，电压互感器的二次回路通电试验时，为防止由二次侧向一次侧反充电，应将（ ）。
A.二次回路断开，取下电压互感器高压熔断器或断开电压互感器一次刀闸
B.二次回路断开
C.取下电压互感器高压熔断器或断开电压互感器一次刀闸
D.以上都不对
[不定项选择题]共用题干
How Technology Pushes Down Prices
1 Prices have fallen in the food business because of advances in food production and distribution tech-
nology.Consumers have benefited greatly from those advances.People who predicted that the world would
run out of food were wrong.We are producing more and more food with less and less capital.Food is there-
fore more plentiful and cheaper than it has ever been.Spending on food compared with other goods has fallen
for many years,and continues to drop.
2 Supermarkets have helped push down prices mainly because of their scale.Like any big business,
they can invest in IT systems that make them efficient.And their size allows them to buy in bulk.As super-
markets get bigger,the prices get lower.
3 Huge retail companies such as Wal-Mart have tremendous power and they can put pressure on pro-
ducers to cut their margins.As a result,some producers have had to make cuts.In recent years,Unilever
has cut its workforce by 33,000 to 245,000 and dropped lots of its minor brands as part of its"path to
growth"strategy.Cadbury has shut nearly 20 per cent of its 133 factories and cut 10 per cent of its 55,000
global workforce.These cuts help keep costs down,and the price of food stays low.
4 Does cheap food make people unhealthy?Cheap food may encourage people to eat more.Food com-
panies certainly think that giving people more food for their money makes them buy more.Giving people big-
ger portions is an easy way of making them feel they have got a better deal.That is why portions have got
larger and larger. In America,soft drinks came in 80z(225g)cans in the past,then 120z(350g),and
now come in 200z(550g)cans.If a company can sell you an 80z portion for$7,they can sell you a 120z
portion for$8.The only extra cost to the company is the food,which probably costs 25 cents.
5 Now companies are under pressure to stop selling bigger portions for less money.But it is hard to
change the trend.
Paragraph 2 __________
A.Huge Retailers Force Producers to Cut Costsl
B.Consumers Like Supermarkets
C.Technology Helps Reduce Food Prices
D.Food Comes Cheaper in Larger Portions
E.Chain Stores Provide Better Service
F.Bigger Supermarkets Offer Lower Prices
[单选题]下列关于太阳系的说法错误的是()。
A.太阳系八大行星按离太阳从近到远的顺序排列为：水星、金星、地球、火星、木星、土星、天王星、海王星
B.太阳系八大行星的自转方向和公转方向都相同
C.小行星是太阳系小天体中最主要的成员，主要由岩石与不易挥发的物质组成
D.太阳系的天体被定义为三类：行星、矮行星和太阳系小天体
[单选题]PED指哪一类带有锂电池的设备？
A.便携式电子设备
B.便携式电子吸烟装置
C.保密型设备
D.便携式电子医疗设备
[多选题]路局管辖范围内发生地震灾害时，供电供电部门，负责全局范围内灾后（ ）等设备管理及抢修复旧工作。（职工）(应急处置-西铁办（2015）118号附件5，2.3.5.)
A.牵引供电
B.接触网
C.电力
D.接触网支柱
[单选题]中国新民主主义革命的伟大胜利,是 20 世纪继( )以后改变世界面貌的伟大历史事件,有力地鼓舞和推动了世界上被压迫民族和被压迫人民反对帝国主义、殖民主义的斗争,极大地增强了他们反对帝国主义斗争的信心,增强了世界人民争取和平的力量。
A.俄国十月革命
B.英国宪章运动
C.法国里昂纺织工人起义
D.德国西里西亚纺织工人起
[单选题]以下哪种羊没有雄伟的大角?
A.盘羊
B.大角羊
C.高鼻羚羊
[填空题]马克思对货币的估价是积极的，他在《资本论》中曾提出（）的说法。
[单选题]每个接触网工区应配备充足的夜间照明用具,照明用具应满足夜间( )范围内照明充足。
A.l00m
B.150m
C.200m
D.250m
[多选题]汽油正常燃烧过程有（）阶段。
A.延迟期
B.速燃期
C.缓燃期
D.后燃期
[多选题]对高于36V电压的电务设备进行带电作业时，应遵守（ ）规定：
A.使用带绝缘的工具，穿绝缘胶鞋室内应站在绝缘板上
B.不得同时接触导电和接地部分
C.未脱离导电部分时，不得与站在地面的人员接触或相互传递工具、材料
D.可以同时接触导电和接地部分
[单选题]457.(91863)分层注水就是根据油田( )制定的配产配注方案。(1.0分)
A.开发
B.设计
C.措施
D.生产
[判断题]( )钢轨类型的选择要根据运输条件综合考虑。（ ）(1.0分)
A.正确
B.错误
[单项选择]在建筑玻璃表面涂镀一层或多层金属、合金或金属化合物薄膜成为镀膜玻璃。通过镀膜改变了玻璃的光学性能，进而改善了它的传热特性，能够大幅度地（）
A. 降低建筑能耗
B. 增加装饰效果
C. 增加玻璃强度
