热门试题:
[单选题]在库仑分析中，关于提高电流效率下列说法不正确的是( )。
A.以水为溶剂时，不必控制电解的电位
B.控制电位电解时，选择适当的电位，就可以得到较高的电流效率
C.电解液及试样可通入氮气可除去溶解的氧气
D.若能选择适当的电极反应以产生滴定剂，就可以得到较高的电流效率
[判断题]存款人申请办理代收代付业务提交的有关证明材料及签订的代收代付协议应专夹保管，定期装订。（ ）
A.正确
B.错误
[单选题]现场作业过程中，要防止误入高压带电区域，（ ），作业人员严禁擅自穿、跨越安全围栏或超越安全警戒线，不得单独移开或越过遮拦进行工作。
A.不确定设备是否带电
B.无论设备是否带电
C.设备停电前
D.安全措施未做
[填空题]接触网有机绝缘部件产品有明确规定的，按出厂规定使用年限执行；没有明确规定的，暂按有效使用寿命不超过<--NRC-->年执行。
[单选题](48010)在线路上焊接钢轨,封锁施工,放行列车( ),特殊情况下由施工负责人决定。(1.0分)
A.限速15km/h
B.限速25km/h
C.限速45km/h
D.不限速
[简答题]"The Child is Father of the Man," wrote the English poet William Wordsworth. 111. Adults today are as aware as Wordsworth of the importance of childhood experiences that a cherished and well-behaved child has a better chance of growing into a balanced, loving and law-abiding adult than an unloved one. The Children Act of 1989, created to give children much-needed protection against abuse, in the process legalized the ideology: the child comes first.
112. But while the nurturing of self-esteem in children is now accepted as a requisite of their development, the social and economic demands on over-worked, harassed parents often prevent them from putting this theory into practice where it matters most in the home. Indeed, much of the time it seems that parents themselves are suffering a crisis of self-esteem.
Reports show that teenagers are increasingly obese and slothful. They watch on average between four and six hours of television a day. 113. No longer subj
[多项选择]公安机关有权运用武装力量进行( )
A. 边境巡
B. 边境自卫
C. 边境守卫
D. 边防检查
[单选题]无论高压设备是否带电，作业人员不得单独移开或越过遮栏进行工作；若有必要移开遮栏时，应有两人在场，并符合设备不停电时的安全距离所规定的安全距离。
A.A.正确
B.B.错误
[不定项选择题]甲煤矿为增值税一般纳税人，主要从事煤炭开采和销售业务，2019年10月有关经营情况如下：
(1)购进井下用原木一批，取得增值税专用发票注明税额18000元。
(2)购进井下挖煤机一台，取得增值税专用发票注明税额71500元。
(3)接受洗煤设备维修劳务，取得增值税专用发票注明税额5525元。
(4)销售自产原煤2000吨，职工食堂领用自产原煤50吨，职工宿舍供暖领用自产原煤100吨，向乙煤矿无偿赠送自产原煤10吨，原煤不含增值税单价500元／吨。
已知：原煤增值税税率为13％，资源税适用税率为8％。
要求：
根据上述资料，不考虑其他因素，分析回答下列小题。
计算甲煤矿当月应缴纳增值税税额的下列算式中，正确的是（ ）。
A.(50+100+10)×500×13％-23525=-13125(元)
B.(2000+100)×500×13％-77025=59475(元)
C.(2000+50+100+10)×500×13％-95025=45375(元)
D.(2000+50+10)×500×13％-89500=44400(元)
[单项选择]下面( )集中体现了柯布西耶的现代城市规划和建设思想。
A. “明天城市”规划方案
B. “光辉城市”规划方案
C. 昌迪加尔规划
D. “田园城市”规划方案
[单项选择]中国近代史以鸦片战争为开端，主要是因为( )。
A. 中国第一次被西方国家打败
B. 长期闭关锁国的状况被打破
C. 社会性质开始发生变化
D. 民族矛盾取代了阶级矛盾
[单选题]消防员将肢体( )伸出车窗外,设有安全带座位的乘员应系安全带。
A.不得
B.随意
C.视情况
D.特殊情况
[单项选择]剂型是一种给药系统或可看作药物释放系统，它可借各种不同的给药途径应用于临床。在口服剂型中，其吸收速度的顺序大致为( )。
A. 混悬液＞散剂＞胶囊剂＞片剂＞包衣片剂＞水溶液
B. 水溶液＞混悬液＞片剂＞包衣片剂＞散剂＞胶囊剂
C. 水溶液＞包衣片剂＞混悬液＞散剂＞胶囊剂＞片剂
D. 散剂＞胶囊剂＞片剂＞包衣片剂＞水溶液＞混悬液
E. 水溶液＞混悬液＞散剂＞胶囊剂＞片剂＞包衣片剂
[多选题]普铁区段，下列哪些情况列车不准退行：（ ）。
A.按自动闭塞法运行时（列车调度员或后方站车站值班员确认该列车至后方站间无列车，并准许时除外）。
B.在降雾、暴风雨雪及其他不良条件下，难以辨认信号时。
C.后方站向该区间办理了越出站界调车，调车作业未结束。
D.自动站间闭塞区间、半自动闭塞区间挂有后部补机的列车
[单项选择]护士为重度臀红的患儿所采取的正确护理措施是（）
A. 经常更换尿布，并用灯光照射30分钟
B. 每次大便后，用肥皂水将臀部洗干净
C. 清洗时用小毛巾直接擦洗患处
D. 保持局部皮肤清洁，并涂鱼肝油、氧化锌软膏
E. 保持局部皮肤清洁，并涂咪康唑霜
[单选题]PLC输入点的信号流向是（），输出点的信号流向（）
A.外部到PLC；外部到PLC
B.外部到PLC；PLC到外部
C.PLC到外部；PLC到外部
D.PLC到外部；外部到PLC
[多选题]有下列行为之一的，予以警告.记过或者记大过；情节严重的，予以降级或者撤职。（ ）[1分]
A.违反民主集中制原则，个人或者少数人决定重大事项
B.拒不执行.擅自改变集体作出的重大决定
C.拒不执行或者变相不执行上级依法作出的决定.命令的
D.拖延执行上级依法作出的决定.命令的
[单选题]在无联锁的线路上接发列车时，车站值班员除严格按接发列车手续办理外，并应将进路上有关（ ）道岔及邻线上的防护道岔加锁。
A.对向
B.顺向
C.带动
D.防护
[单选题]调车作业每钩作业前，司机(调车指挥人)应主动向列车调度员(车站负责办理调车进路时为车站值班员或车务应急值守人员)请求( )；进路准备妥当后，列车调度员(车站值班员或车务应急值守人员)方可通知司机(调车指挥人)。GJ319
A.区间进路
B.调车进路
C.进路
[判断题]批发市场和集市都必须是常设的交易市场，必须具有连续不断的交易特性；另外，两者一般都实行会员制。
[单选题] 危害和整改难度较大,需要 4 日以上且停止使用相关设施设备,或者需要 4 至 6 日且停产停业方可排除的隐患, 为( )事故隐患。
A. 一级
B. 二级
C.三级
D.四级
[单选题]有下列情形之一的，实体票卡可以正常使用（）。
A.记名类储值卡违规使用，系统设置黑名单功能，此卡被系统禁用；
B.储值卡余额不足；
C.计次票乘次不足；
D.此类型的票卡已经正式接入AFC系统；
[单选题]接地引下线用渡锌钢绞线的最小允许截面，不小于（ ）mm2
A.16
B.25
C.50
D.70
E.略
F.略
G.略
H.略
[单选题]若用户擅自使用已报暂停的电气设备,称为( )。 ( )
A. 窃电
B.违约用电
C. 正常用电
D. 计划外用电
[单选题]低压电力网的布局应与农村发展规划相结合，供电半径一般不大于( )m。
A.1000
B.800
C.500
D.300
E.略
F.略
G.略
[判断题] Mary Kay believed that a woman could succeed in business.
A.正确
B.错误
[单选题]电动工具的电气部分经维修后，应进行（）。
A. A.绝缘电阻测量及绝缘耐压试验
B.B.绝缘电阻测量
C.C.绝缘耐压试验
D.D.绝缘电阻测量或绝缘耐压试验
[不定项选择题]共用题干
第三篇
Animal Testing Controversy
To paraphrase 18th-century statesman Edmund Burke,"All that is needed for the triumph of a misguided cause is that good people do nothing." One such cause now seeks to end biomedical research because of the theory that animals have rights ruling out their use in research.Scientists need to respond forcefully to animal rights advocates,whose arguments are confusing the public and thereby threatening advances in health knowledge and care.Leaders of the animal rights movement target biomedical research because it depends on public funding,and few people understand the process of health care research.Hearing allegations of cruelty to animals in research settings,many are perplexed that anyone would deliberately harm an animal.
For example,a grandmotherly woman staffing an animal rights booth at a recent street fair was distributing a brochure that encouraged readers not to use anything that comes from or is animals一no meat,no fur,no medicines.Asked if she opposed immunizations,she wanted to know if vaccines come from animal research.When assured that they do,she replied,"Then I would have to say yes."Asked what will happen when epidemics return,she said,"Don't worry,scientists will find some way of using computers."Such well-meaning people just don't understand.
Scientists must communicate their message to the public in a compassionate,understandable way一in human terms,not in the language of molecular biology.We need to make clear the connection between animal research and a grandmother's hip replacement,a father's bypass operation,a baby's vaccinations,and even a pet's shots.To those who are unaware that animal research was nee-- ded to produce these treatments,as well as new treatments and vaccines,animal research seems wasteful at best and cruel at worst.
Much can be done.Scientists could"adopt"middle school classes and present their own re-search.They should be quick to respond to letters to the editor,lest animal rights misinformation go unchallenged and acquire a deceptive appearance of truth.Research institutions could be opened to tours,to show that laboratory animals receive humane care.Finally,because the ultimate stakeholders are patients,the health research community should actively recruit to its cause not only well-known personalities such as Stephen Cooper,who has made courageous statements about the value of animal research,but all who receive medical treatment.If good people do nothing there is a real possibility that an uninformed citizenry will extinguish the precious embers of medical progress.
The author begins his article with Edmund Burke's words to________.
A.call on scientists to take some actions
B.criticize the misguided cause of animal rights
C.warn of the doom of biomedical research
D.show the triumph of the animal rights movement
[单选题]单选题]下列关于消防员避火防护服的维护保养要求,错误的是( )。 (1分)
A.使用后可用干棉纱将消防员避火防护服表面烟垢和熏迹擦净,其它污垢可用软毛刷蘸中性洗涤剂刷洗,并用清水冲洗净。
B.可以用水浸泡或捶击。
C.镀金视窗应用软布擦拭干净,并覆盖一层PVC膜保护,以备再用。
D.应保存在干燥通风处,防止受潮和污染。
[单项选择]下列不属于2017款全新福特福克斯绿色相关产品亮点的是（）。
A. SelectShiftTM6速手自一体变速器
B. 发动机自动启停功能
C. ECO节油驾驶信息模式
D. 定速巡航
[多选题]下列（ ）属于遥控点表内容。
A.开关分闸
B.开关合闸
C.执行电池活化
D.故障告警
[判断题]有意作伪证或者隐匿罪证的要承担法律责任。
A.正确
B.错误
[判断题]感应法一般使用于测量电缆的高压阻短路及单相接地故障。（ ）
A.正确
B.错误
