热门试题:
[多选题]关于溶糖以下说法正确的是（）
A.单糖浆需要冷却到25℃以下
B.溶糖时活性炭（吸附剂）的添加比例一般是0.1-0.15% ；
C.温度越高，活性炭的活性越好，因此可以提高温度来加强活性炭吸附效果；
D.简单糖浆储存时间最长不超过48h；
[判断题]缓冲器按其结构可分为摩擦式、摩擦橡胶式和液压式3种，
A.正确
B.错误
[单项选择]
Despite increased airport security since September 11th, 2001, the technology to scan both passengers and baggage for weapons and bombs remains largely unchanged. Travellers walk through metal detectors and carry-on bags pass through x-ray machines that superimpose colour-coded highlights, but do little else. Checked-in luggage is screened by "computed tomography", which peers inside a suitcase rather like a CAT scan of a brain. These systems can alert an operator to something suspicious, but they cannot tell what it is.
More sophisticated screening technologies are emerging, albeit slowly. There are three main approaches: enhanced x-rays to spot hidden objects, sensor technology to sniff dangerous chemicals, and radio frequencies that can identify liquids and solids.
A number of manufacturers are using "reflective" or "backscatter" x-rays that can be calibrated to see objects through clothing. They can spot things that a metal
A. A generalization is made in paragraph 2 and then elaborated in paragraph 3,4 and 5
B. More sophisticated screening technologies are mentioned in paragraph 2 and 3 and then examples are provided in paragraph 4 and 5
C. Specific evidence is provided in paragraph 1, 2 and 3 and then a conclusion is drawn in paragraph 4
D. Three main approaches are advanced in paragraph 2,3 and then their functions are detailed in paragraph 4 and 5
[判断题]吊具高度高于起升上减速位置时,俯仰不能动作。
A.正确
B.错误
[单选题]下列会造成设备过热的原因是（ ）。
A.电流不稳
B.频率过低
C.轴承间隙过小或过大
D.微缺油
[单选题] 年 4 月 8 日,国务院常务会议决定在上海市和广东省广州、深圳、珠海、东莞 4 城市开展试点:跨境贸易,可以用()结算。
A.美元
B.欧元
C.人民币
D.日元
[判断题]游标卡尺是只用于直接测量机件内、外径的量具。( )
A.正确
B.错误
[填空题]若有效焦点尺寸是2.5mm×2.5mm，则实际焦点是（）的。
[判断题]无还款月情况下借款人可以不需要支付当月利息。
A.正确
B.错误
[单选题]用船舶接送作业人员应遵守的规定说法错误的是（）。
A.A-禁止超载超员
B.B-船上应配备合格齐备的救生设备
C.C-乘船人员应正确穿戴救生衣，掌握必要的安全常识，会熟练使用救生设备
D.D-船上搭载和存放易燃易爆物品时，应制定可靠的安全措施
[单项选择]隧道开挖后，围岩压力是（）
A. 垂直向下
B. 水平作用
C. 底部向上
D. 四周及纵向压力
[多选题]“金税三期工程”通过（ ）的建设，形成一个网络覆盖率100%，年事务处理量近100亿笔、税务机关内部用户超过60万人、纳税人及外部用户超过亿人（户）的全国税收管理信息系统。
A.一个平台
B.两级处理
C.三个覆盖
D.四类系统
E.五级操作
[单选题]禁止用个人保安线代替接地线。
A.正确
B.错误
C.略
D.略
E.略
F.略
[多选题]安全工作先进单位应当具备____条件。( )
A.无等级责任事故
B.无所属人员涉案的刑事案件
C.无严重失(泄)密事件
D.无严重违纪案件
E.无因管理教育、防范不到位导致的自杀事件
[单项选择]发病率呈历年的一般水平，各病例间在发病时间和地点方面无明显联系（）
A. 散发
B. 暴发
C. 流行
D. 大流行
E. 大暴发
[单选题]下列哪一项是法定的法律责任免除的事由
A.自首并重大立功
B.未达到法定责任年龄
C.紧急避险
D.精神失常
[单项选择]患者，男，26岁。先天性心脏病致心力衰竭，应用强心甙疗效不显著。可试换用的药物是
A. 氯化钙
B. 阿托品
C. 卡托普利
D. 肾上腺素
E. 异丙肾上腺素
[单选题] 作业人员发现安全隐患应妥善处理或向( )报告:发现直接危及人身、电网和设备安全的紧急情况时,应立即停止作业或在采取必要的应急措施后撤离危险区域。 (1.0分)
A. 上级
B. 业主
C. 监理
D. 施工单位
[判断题]《企业安全生产标准化基本规范》要求.企业应定期对安全生产与职业卫生目标、指标实施情况进行评估和考核.并结合实际及时进行调整. ( )
A.正确
B.错误
[单项选择]下列关于丙咪嗪（米帕明）的效应，错误的是（）.
A. 易引起心律失常
B. 抗抑郁作用起效快
C. 抑制去甲肾上腺素再摄取
D. 对正常人有镇静作用
E. 阿托品样作用
[单选题]根据房间高度选择感温火灾探测器的灵敏度,当房间高度在7m时,应选择( )感温火灾探测器。
A.一级
B.二级
C.三级
D.四级
[单选题]MPTl00型推车式干粉灭火器的灭火射程在( )m。
A.16~18
B.14~16
C.12~14
D.18~20
[单项选择]Questions 9 to 12 are based on the conversation you have just heard.
A. Because she had promised that she would.
B. Because she has been sick.
C. Because she needs his approval for her schedule.
D. Because she must verify his plans.
[判断题]影响道岔或信号使用以及在道岔转辙、可动心辙叉部位进行的作业，必须提前与电务部门联系，填写工电配合通知书。
A.正确
B.错误
[单选题]下列选项中，不属于资产评估相关当事人的是（ ）。
A.委托人
B.资产评估机构
C.资产评估专业人员
D.被评估单位的基层员工
[填空题]Thank you for choosing our restaurant during your visit to London. Services to guests of the restaurant are a large part of our tasks, and we are grateful for the opportunity to serve you. We would like to invite your comments on our performance and to learn from your experiences. Please take a few moments to complete our customer response form so that we may serve you better in the future.
[单选题]《客运对讲机使用管理办法》（客管函〔2016〕302号）规定客运对讲机2频道设置为（ ）频率。
A.457.700
B.457.950
C.457.725
D.467.200
[多选题]施工区域临时排水选用井点降水时应符合的规定有（）。
A.应制订井点降水施工方案
B.已成孔尚未下井点管前，井孔应用盖板封严
C.有车辆或施工机械通过区域，应对敷设的井点防护、加固
D.降水完成时，应及时将井填实
[判断题]车间编制《施工项目盯控责任表》应明确监护重点及责任人
A.正确
B.错误
[判断题]进入立体库房巷道应佩戴安全帽，并切断堆垛机电源，待堆垛机静止5秒后进入。检修完毕后应确认巷道内无遗留杂物，方可启动堆垛机。
A.正确
B.错误
[判断题]中国工人运动第一次高潮的起点是香港海员工人罢工。（）
[单选题]患者,女性,20岁,既往有甲亢病史,参加完运动会后突发四肢无力,不能走路,查体神清,血压正常,四肢肌张力减低,可采取何种治疗措施( )
A.口服葡萄糖
B.口服氯化钠
C.口服氯化钾
D.静滴糖盐
E.静滴葡萄糖加胰岛素
[不定项选择题]共用题干
第一篇
Electronic Teaching
The potential of closed-circuit television and other new electronic teaching tools is so great that it is fascinating to visualize"the school of tomorrow".
Televised lessons will originate from a central building having perhaps four or five master studios. The lessons will be carried into classrooms all over a city,or even an entire country.
After a televised lesson has been given,the classroom teacher will take over for the all-important"follow-up"period.The students will ask any troublesome questions,and difficult points will
be cleared up through discussion.
The teacher in the classroom will have additional electronic tools.On the teacher's desk,the traditional chalk and erasers will have been replaced by a multiple-control panel and magnetic tape players.The tape machines will run pre-recorded lessons which pupils will follow by headphones. The lessons will be specifically geared to the students' levels of ability.For instance,while the class as a whole studies history,each student will receive an individual history lesson,directed to his particular level of ability.
Should question arise,the students will be able to talk directly to the teacher on individual intercoms without disturbing the rest of the class.In this way,the teacher will be able to conduct as many as three classes at the same time.
With the rapid development of computer science,students will be aided with specially prepared multi-media software to study their subjects better. Homework will possibly be assigned and handed in via electronic mail system. Students can even take examinations on their computer linked with the teachers' and get the score instantly.They will get certificates or diplomas if they pass all the required examinations. Experts believe that this type of education will be very popular in the years ahead.
Lessons broadcast by television will come from_______.
A.the school of tomorrow
B.classrooms
C.big buildings
D.master studios
[简答题]离心压缩机的转子为什么要做静平衡和动平衡检查？
[判断题]制冷剂的循环是靠压缩机的运转来实现的。
A.正确
B.错误
[单选题]《毛诗序》说：“情动于中而形于言，言之不足，故嗟叹之，嗟叹之不足，故咏歌之，咏歌之不足，不知手之舞之，足之蹈之也。”这说明人在非常激动，内心情感用语言以致唱歌都难以充分表达的时候，会情不自禁地通过手舞足蹈来抒发。舞蹈表达感情的特点是形神结合，以感情引起体动，以体动表达感情，给人以生动的直观形象。这段文字意在说明( )
A.舞蹈是内心情感的直观形象表现
B.舞蹈是情感表现的最高境界
C.舞蹈的艺术魅力在于能更好地表达内心情感
D.舞蹈的灵魂源自内心情感
[多项选择]甲有二子乙和丙。乙离家出走，经法院依法判决宣告死亡。后甲病故，遗产由丙继承。甲病故三年后，乙返回并要求继承甲的遗产。请判断下列哪种说法是正确的( )
A. 乙、丙均为甲的继承人，理由是甲与乙、丙之间是父子关系
B. 只有丙为继承人，理由是继承开始后，乙被宜告死亡
C. 乙无权要求继承甲的遗产，理由是遗产已由丙继承，该继承行为已经发生法律效力
D. 乙有权继承甲的遗产，理由是乙为甲的继承人，且提出权利请求未超过诉讼时效
[单选题]配电柜内电源线着火应选用（ ）灭火剂进行灭火。
A.水
B.干粉灭火器
C.卤化烷灭火器
D.空气泡沫灭火器
