热门试题:
[单选题]下列属于专勤消防车的是()。
A.泡沫消防车
B.水罐消防车
C.照明车
D.二氧化碳消防车
[多选题]银行市场环境分析的主要任务有（ ）。
A.实行市场定位
B.规避操作风险
C.分析购买行为
D.进行市场细分
E.选择目标市场
[单项选择][说明] 在Linux服务器中，inetd/xinetd是Linux系统中一个重要服务。
[问题2] 默认情况下，xinetd配置目录信息为：
drwxr-xr-x root root 4096 2009004-23 18:27 xinetd.d
则下列说法错误的是______。
A. root用户拥有可执行权限
B. 除root用户外，其他用户不拥有执行权限
C. root用户拥有写权限
D. 除root用户外，其他用户不拥有写权限
[单项选择]开放式基金托管人全面行使职责的主要阶段是( )。
A. 签署基金合同阶段
B. 基金募集阶段
C. 基金运作阶段
D. 基金终止阶段
[单项选择]平行承发包模式在合同管理方面的一个特点是( )。
A. 平行承发包模式下，施工单位数量较少，对业主合同管理有利
B. 业主要负责对多个合同的跟踪管理，工作量较大
C. 合同交界面较多，对控制有利
D. 符合“他人控制”原则，对业主合同管理有利
[不定项选择题]共用题干
Renewable Energy Sources
Today petroleum provides around 40%of the world's energy needs,mostly fuelling automobiles .Coal is still used,mostly in power stations,to cover one-quarter of our energy needs,but it is the least efficient,unhealthiest and most environmentally damaging fossil fuel.Natural gas reserves could plug some of the gap from oil,but reserves of that will not last into the 22nd century either.
Most experts predict we will exhaust easily accessible reserves within 50 years.We could fasi reach an energy crisis.We need to rapidly develop sustainable solutions to fuel our future.Lesspolluting renewable energy sources offer a more practical long-term energy solution.They may benefit the world's poor too."Renewable"refers to the fact that these resources are not used faster than they can be replaced.
The Chinese and Romans used watermills over 2,000 years ago. But the first hydroelectric dam was built in England in 1870.Hydroelectric power is now the most common form of renewable energy,supplying around 20%of world electricity. China's Three Gorges Dam,which has just been completed,is the largest ever. At five times the size of the US's Hoover Dam,its 26 turbines will generate the equivalent energy of 1 8 coal-fired power stations.It will satisfy 3%of China's entire electricity demand.Surprisingly,some argue that hydroelectric dams significantly contribute green- house gases.
In 2003,the first commercial power station to harness tidal currents in the open sea opened in Norway .It is designed like windmill,but others take the form of turbines.
As prices fall,wind power has become the fastest growing type of electricity generation-quadrupling worldwide between 1999 and 2005 .Modern wind farms consist of turbines that gener- ate electricity.Though it will be more expensive,there is more than enough wind to provide the world's entire energy needs. Wind farms come in onshore and offshore forms.They can often end up at spots of natural beauty,and are often unpopular with residents.And turbines are not totally benignthey can interfere with radar and leave a significant ecological footprint,altering climate and killing sea birds.Migrating birds may have more luck avoiding them.Scotland is building
Europe's largest wind farm,which will power 200,000 homes.The UK's goal is to generate one- fifth of power from renewable sources,mainly wind,by 2020 .But this may cause problems,be- cause wind is unreliable.
Which of the following statements is true of wind power?
A.There is plenty of wind to provide the world's entire energy needs.
B.It is the most rapidly growing type of electricity production.
C.It may not he reliable.
D.All of the above.
[单选题]给二极管加反向电压时,只要所加电压在一定范围内,这时反向电流很小,电阻很大,这时二极管截止,呈开断状态,这是二极管的()。(1.00分)
A. 正向特性
B. 反向特性
C. 反向击穿
[单项选择]导线的导电能力包含（）等三方面的要求。
A. 发热、电压损失、短路电流
B. 机械强度、导体材料、导体长度
C. 导体电阻、机械强度、导体截面积
[单选题]当建筑物首层发生火灾,消防应急广播应进行( )广播。
A.着火层及相邻的上下层
B.本层、二层及地下各层
C.地下各层及首层
D.起火的防火分区及其相邻的防火分区
[单选题]肾上腺皮质肿瘤不会引起
A..原醛症
B..肥胖小孩伴小生殖器
C..Cushing综合征
D..对侧肾上腺肥大
E..偶发低血糖症
[判断题]只要有一定的文化科学知识就可以当教师。( )
[多选题]依据南网安规，在（）装拆接地线时，应戴绝缘手套。
A.厂站
B.低压配电网
C.高压配电线路
D.36V照明配电箱
E.lue
[单项选择]下列生化反应是嗜肺军团菌区别其他军团菌的特征是( )
A. 分解尿素
B. 还原硝酸盐
C. 水解马尿酸
D. 过氧化物酶阳性
E. 分解葡萄糖
[单选题]生产经营单位的（ ）负责组织制定并实施本单位安全培训计划。
A.主要负责人
B.安全生产管理人员
C.人力资源部门
[判断题][T]BA036 5 3 1
（ ）管道流量大于预设定的流量值时，计算机对电液阀发出信号，之后主阀活塞向下移动使主阀流通面积减小，管道的流量也就减小。
A.正确
B.错误
[判断题]1.(判断题)根据《起重机械安装改造重大修理监督检验规则》,起重机械的主要受力结构件在现场分段组装焊接时,其过程纳入安装
监检。
A.正确
B.错误
[单项选择]下列关于可摘局部义齿基托的叙述，你认为哪项是错误的（）
A. 在保证义齿固位与稳定的前提下，基托应尽量减小，提供舒适性
B. 基托的磨光面应设计为凹面，有助于义齿的固位与稳定
C. 舌腭侧基托的边缘应进入天然牙舌腭侧倒凹，以利于义齿的固位
D. 基托组织面应对牙槽嵴硬区和骨突等地方进行缓冲，以免牙龈组织受压疼痛
E. 整铸支架义齿的基托厚度一般为0.5mm，塑料基托厚度一般为2mm
[判断题]所有矿井必须装备矿井安全监控系统。（ ）
A.正确
B.错误
[单选题]（ ）（简称“三种人” ）每年应进行“三种人”资格考试，合格后以发文形式公布。
A.工作票签发人、工作负责人和工作许可人
B.工作班成员、工作负责人和工作许可人
C.工作票签发人、专责监护人和工作负责人
D.值班负责人、工作负责人和工作许可人
[单选题]对()损伤的伤员，要严禁让其站起、坐立和行走。
A.A、脊柱
B.B、腹部
C.C、头部
[单项选择]
What is your favorite color Do you like yellow, orange, red If you do, you must be an optimist, a leader, an active person who enjoys life, people and excitement. Do you prefer grays and blues Then you are probably quiet, shy, and you would rather follow than lead. You tend to be a pessimist. At least, this is what psychologists tell us, and they should know, because they have been seriously studying the meaning of color preference, as well as the effect that colors have on human beings. They tell us, among other facts, that we do not choose our favorite color as we grow up—we are born with our preference. If you happen to love brown, you did so, as soon as you opened your eyes, or at least as soon as you could see clearly.
Colors do influence our moods—there is no doubt about it. A yellow room makes most people feel more cheerful and more relaxed than a dark green one; and a red dress brings warmth and cheer to the saddest winter day. On the other hand, black
A. its shape
B. its structure
C. its color
D. its building materials
[单项选择]痛经的病位在（）
A. 肾
B. 胞脉、胞络
C. 小腹
D. 冲任、胞宫
E. 气、血
[单选题] 世界上第一部茶书的书名是( ).
A.《品茶要录》
B.《茶具图赞》
C.《榷茶》
D.《茶经》
[判断题]自动空气开关,在电路发生过载和短路故障时,能自动断开电路。( )
A.正确
B.错误
[判断题]1 燃气户外立管与装饰后墙面的净距，应考虑日后维护、美观以及防攀爬等情况。立管安装后与墙面的距离宜保持在10～20mm左右。
A.正确
B.错误
[多选题]下列属于按脱氧程度分类的钢材包括（ ）。
A.碳素钢
B.沸腾钢
C.镇静钢
D.合金钢
E.特殊钢
[单项选择]There were many people present and he appeared only for a few seconds, so I only caught a ______ of him.
A. glance
B. glimpse
C. look
D. sight
[单选题]沿隧道设计断面轮廓线布置的周边眼间距误差不得大于（）
A.5cm
B.10cm
C.15cm
D.20cm
[单选题]120型控制阀常用制动位第一阶段时因制动管减压,主活塞带动节制阀( ),节制阀切断制动管与副风缸通路,制动管压力经滑阀座.节制阀.局减室至大气孔,实行局部减压。
A.上移
B.下移
C.左移
D.右移止
[单项选择]______, Jim had to stay up for the night to finish his paper.
A. Having not given enough time
B. Having not been given enough time
C. Not having been given enough time
D. Not having given enough time
[单选题]主动脉瓣听诊区闻及舒张期杂音，常见于
A.风湿性主动脉瓣关闭不全
B.二尖瓣狭窄
C.二尖瓣关闭不全
D.主动脉瓣狭窄
E.室间隔缺损
[单选题]1.11 经公安机关破案发还的被盗抢且已向原机动车所有人理赔完毕的机动车，其来历证明是________。
A.权益转让证明书
B.二手车交易发票
C.公证书
D.《民事调解书》
[单选题]第一百三十二条 单选题不(QA.PD.MD.CD) 不合格的物料、中间产品、待包装产品和成品的处理应当经( )批准。
A.
质量管理负责人
B.
质量授权人
C.
生产管理负责人
D.
企业负责人
[单选题]辙叉心一侧纵向水平裂纹长度超过（ ）mm为高锰钢整铸辙叉重伤标准。
A.50
B.60
C.80
D.100
E.120
F.200
[单选题]患者,女,35岁。因忽然停用糖皮质激素后出现哮喘重度发作,患者出现端坐位呼吸,明显发绀大汗淋漓呼吸频率30次/分,脉搏118次/分,血压90/60mmHG.宜选用的药物是( )
A.氨茶碱
B.地塞米松
C.色甘酸钠
D.氯苯那敏
E.沙丁胺醇
[判断题]事故隐患泛指生产系统中可导致事故发生的人的不安全行为、物的不安全状态和管理上的缺陷。 ( )
A.正确
B.错误
[单项选择]Addiction is such a harmful behavior, in fact, that evolution should have long ago weeded it out of the population: if it’s hard to drive safely under the influence, imagine trying to run from a saber-toothed tiger or catch a squirrel for lunch, And yet, says Dr. Nora Volkow, director of NIDA and a pioneer in the use of imaging to understand addiction, "the use of drugs has been recorded since the beginning of civilization. Humans in my view will always want to experiment with things to make them feel good."
That’s because drugs of abuse co-opt the very brain functions that allowed our distant ancestors to survive in a hostile world. Our minds are programmed to pay extra attention to what neurologists call salience—that is, special relevance. Threats, for example, are highly salient, .which is why we instinctively try to get away from them. But so are food and sex because they help the individual and the species survive. Drugs of abuse capitalize on this ready-made programming. Wh
A. are born with a predisposition to addiction.
B. use certain chemicals long and frequently enough.
C. have sufficient drugs or alcohol to use.
D. create an all consuming pattern of uncontrollable craving.
[多选题]在LT
中，功率控制包括（）
A.上行功率控制
B.上行功率分配
C.下行功率控制
D.下行功率分配
