热门试题:
[单选题]1.376 . 第376题
检查电缆相间故障的方法是测量各相间的( ),以判断有无相间短路故障。
A.绝缘电阻
B.电流值
C.电压值
D.阻抗值
[填空题]让幼儿倾听和分辨各种声响,引导幼儿用自己的方式来表达他对_____的感受。
[单选题]在正弦交流电路中,电路的功率因数取决于(B)。
A.电路外加电压的大小
B.电路各元件参数及电源频率
C.电路的连接形式
D.电路的电流
[简答题]
结构化布线成为网络设计和管理的首先考虑的问题,当实施结构化布线时,需要进行详细的规划设计。
布线实施后,需要经过系统测试,测试线路的主要指标有哪些 |
[单项选择]下列各项,不可以成为合同客体(或称标的)的是( )。
A. 合同当事人可以有效支配的物质财富
B. 合同当事人提供的行为(包括劳动和服务)
C. 土地
D. 合同当事人提供的智力成果(如发明权、著作权、商标权、专利技术成果)
[单选题]()工作人员将安全绳、安全双钩挂在电缆及电缆支架上
A.A.可以
B.B.允许
C.C.禁止
D.D.严格
E.略
F.略
G.略
[多项选择]在碘量法中为了减少I2的挥发,常采用的措施有()。
A. 使用碘量瓶
B. 滴定不能摇动,要滴完后摇
C. 适当加热增加I2的溶解度,减少挥发
D. 加入过量KI
E. 溶液酸度控制在pH>8
[单项选择]膳食锌最好的食物来源是()。
A. 禽畜肉
B. 动物内脏
C. 蔬菜、水果
D. 贝壳类海产品
E. 谷类
[判断题] 监察机关对于被调查人在调查阶段认罪认罚,但不符合监察法规定的提出从宽处罚建议条件,在移送起诉时没有提出从宽处罚建议的,应当在《起诉意见书》中写明其自愿认罪认罚的情况。( )
A.正确
B.错误
[多选题]动车组以外的旅客列车编组顺序表办理交接应执行( )。(应知应会-《技规》第278条)
A.仅更换机车乘务组时,机车乘务组之间办理交接。中途换挂机车时,到达司机与车站间、车站与出发司机间办理交接。
B.途中摘挂车辆时,车站负责修改列车编组顺序表。
C.在始发站由车站人员按列车编组顺序表核对现车,无误后,与司机办理交接。
D.列车到达终到站后,司机与车站办理交接。
[单选题]患者,男性,47 岁,高血压病,左侧肢体偏瘫,医嘱测血压 4 次 / 日,下列哪项不妥( )
A.固定血压计
B.测右上肢血压
C.仰卧位测量,使肱动脉平腋中线
D.必须固定专人测量
E.进食后安静休息 30 分钟后再测
[单项选择]青春期男女素质指标差别迅速扩大是在()。
A. 7~15岁
B. 15~20岁
C. 13~18岁
D. 7~12岁
E. 13~16岁
[不定项选择题]共用题干
Natural Gas
1 Natural gas is produced from reservoirs deep beneath the earth's surface. It is a fossil fuel(矿物燃
料),meaning that it is derived from organic material buried in the earth millions of years ago.The main corn-
ponent of natural gas is methane(甲烷).
2 The popularity and use of clean natural gas have increased dramatically over the past 50 years as
pipeline infrastructure(基础设施)has been installed to deliver it conveniently and economically to millions
of residential,commercial and industrial customers worldwide.Today,natural gas service is available in all 50
states in the U.S.,and is the leading energy choice for fueling American homes and industries.More than 65
million American homes use natural gas.In fact,natural gas is the most economical source for home energy
needs,costing one-third as much as electricity. In addition to heating homes,much of the gas used in the United
States is used as a raw material to manufacture a wide variety of products,from paint,to fibers for clothing,to
plastics for healthcare,computing and furnishings.Natural gas is also used in a significant number of new
electricity-generating power plants.
3 Natural gas is one of the safest and cleanest fuels available. It emits(发出)less pollution than other
fossil fuels sources. When natural gas is burned,it produces mostly carbon dioxide(二氧化碳)and water va-
por一the same substances emitted when humans breathe.Compared with some other fossil fuels,natural gas
emits the least amount of carbon dioxide into the air when combusted(燃烧)一making natural gas the clea--
nest burning fossil fuel of all.
4 The United States consumes about one-third of the world's natural gas output,making it the largest
gas-consuming region in the world.The U.S.Department of Energy Information Administration forecasts that
natural gas demand will grow by more than 50 percent by 2025.
5 There are huge reserves of natural gas beneath the earth's surface.The largest reserves of natural
gas can be found in Russia , West and North Africa and the Middle East. LNG(液化天然气)has been pro-
duced domestically and imported in the United States for more than four decades.Today,the leading import-
ers of LNG are Japan,Korea,France and Spain.
When manufacturing many different products,people commonly use natural gas______________.
A.over the past 50 years
B.beneath the earth's surface
C.by more than 50 percent
D.for more than four decades
E.as a raw material
F.for home energy needs
[判断题]机车固定走行线上禁止停留机车车辆。
A.正确
B.错误
[判断题]原料煤中灰份过高,在气化炉在反应时,会增加氧气的消耗,降低气化效率,对渣水系统影响不大。( )
A.正确
B.错误
[单选题]( )应当设置或者指定职业卫生管理机构或者组织,配备专职或者兼职的职业卫生专业人员,负责本单位的职业病防治工作。
A. 卫生行政部门
B. 工会组织
C. 用人单位
D. 施工单位
[单项选择]在我国从事代理记帐业务的机构,应至少有()名持有会计从业资格证书的专职从业人员。
A. 2
B. 3
C. 4
D. 5
[判断题]( )检修液态烃泵、溶剂泵、轻油泵、气体压缩机以及溶剂过滤机等设备时,装卸零件部位要使用铜棒、铜锤、铜扳手等不易产生火星的防爆工具,不允许擅自动火。
A.正确
B.错误
[单选题]379如图显示心肺复苏法的步骤是( )。
A.判断意识
B.摆正体位
C.畅通气道
D.呼吸判断
[单选题] 除规定货物外,一批数量为1800件的规格相同的成件货物,整车运输时,按()承运。
A. 件数
B. 件数或重量
C. 件数和重量
D. 仅按重量,不计算件数
[单选题]某一油池着火,燃烧面积约500m2,现使用C P10型泡沫消防车灭火,其最大泡沫供给量为200L/s,若泡沫灭火供给强度为1L/s·m2,则需要多少辆该型泡沫消防车。( )
A.2
B.3
C.4
D.5
[单选题]调整阀串接在120型控制阀通往( )的管路中。
A.列车管
B.副风缸
C.制动缸
D.加速缓解风缸
[单项选择]HAV的主要传播途径是
A. 母婴垂直传播
B. 吸血昆虫叮咬
C. 呼吸道传播
D. 消化道传播
E. 泌尿生殖道传播
[判断题]发现原始凭证大、小写金额不符的,应该用红线更正涂改。( )
A.正确
B.错误
[多项选择]我国的税款征收方式包括( )。
A. 定期定额征收
B. 代扣代缴
C. 代收代缴
D. 委托代征
[判断题]沿海可能发生重大海洋环境污染事故的单位,应当依照国家的规定,制定污染事故应急计划,并向当地环境保护行政主管部门、海洋行政主管部门申请备案。()
[多选题]使用液压机压接作业时,以下正确的是( )。
A.放入顶盖时,应使顶盖与钳体完全吻合
B.压接钳活塞起落时,人体不得位于压接钳上方
C.液压泵操作人员应与压接钳操作人员密切配合
D.宜用溢流阀卸荷
[多选题]放空点燃必须从( )方向接近,并保持足够的安全距离。
A.下风
B.侧上风
C.上风
D.侧下风
[单选题]ZD6系列电动转辙机当插入手摇把或打开机盖时.遮断器接点断开不少于
A.1mm
B.2mm
C.3mm
D.4mm
[单选题]轨道车动车前撤除车列防护信号时,司机呼唤“防护信号”,已撤除时,副司机应答的标准用语为( )。
A.防护信号
B.注意撤除
C.撤除好了
D.注意信号
[单项选择]患者,女,20岁,昏睡、呕吐2小时,既往体健。查:皮肤潮红,呼吸不规则,有苦杏仁味,考虑可能为()
A. 安眠药中毒
B. 酒精中毒
C. 煤气中毒
D. 氰化物中毒
E. 有机磷农药中毒
[不定项选择题]建筑工人不慎坠楼,腰部剧痛,双下肢感觉运动障碍,二便功能障碍,经X线检查,诊断为胸腰段压缩型骨折,高度怀疑脊髓损伤。
除手术治疗外,早期最重要的治疗措施是
A.抗生素
B.吗啡止痛
C.大剂量糖皮质激素和甘露醇脱水
D.防治褥疮
E.留置导尿
[单选题]心绞痛与急性心肌梗死临床表现的主要鉴别点是:
A.疼痛部位
B.疼痛性质
C.疼痛程度
D.疼痛放射部位
E.疼痛持续时间
[多项选择]事业单位事业基金中的一般基金,其主要来源有( )。
A. 从当年未分配结余中转入
B. 从拨入专款形成的结余中按规定留归本单位使用的金额转入
C. 盘盈的固定资产
D. 用货币资金、材料和无形资产对外投资时从投资基金中转入
[填空题]一号线列车第( )列配置走行部检测装置。
[简答题]Google’s Plan for World’s Biggest Online Library: Philanthropy Or Act of Piracy
In recent years, teams of workers dispatched by Google have been working hard to make digital copies of books. So far,Google has scanned more than 10 million titles from libraries in America and Europe—including half a million volumes held by the Bodleian in Oxford. The exact method it uses is unclear: the company does not allow outsiders to observe the process.
Why is Google undertaking such a venture’ Why is it even interested in all those out-of-print library books, most of which have been gathering dust on forgotten shelves for decades The company claims its motives are essentially public-spirited. Its overall mission, after all, is to "organise the world’s information", so it would be odd if that information did not include books.
The company likes to present itself as having lofty aspirations. "This really isn’t about making money. We are doing this for the good of society." As Santiago de la Mo