热门试题:
[单选题]反密码子UAG识别的mRNA上的密码子是
A.GTC
B.ATC
C.AUC
D.CUA
E.CTA
[单选题]关于供给侧改革,下列阐述不正确的--项是( )。
A.我们讲的供给侧结构性改革,同西方经济学的供给学派不是一回事
B.我国经济发展面临的问题,供给和需求两侧都有,但矛盾的主要方面在需求侧
C.供给侧结构性改革旨在调整经济结构,使要素实现最优配置
D.供给侧改革实质上就是改革政府公共政策的供给方式
[多选题]秦朝的诉讼程序中,官府不予受理的有()。
A.A州告
B.非公室告
C.甲告
D.公室告
[单项选择]原料湿混合是指粒料、粉料与()、糊状料的混合。
A. 气体
B. 液体
C. 固体
D. 粒子
[单项选择]劳动强度过大,工作组织和制度不合理,劳动姿势不良,劳动工具不合适,精神方面或个别器官系统过度紧张,这样一些有害因素可统称为
A. 物理性职业有害因素
B. 物理性职业有害因素
C. 生产过程中的有害因素
D. 劳动过程中的有害因素
E. 生产环境中的有害因素
[多选题]下列哪些属于健康教育的内容( )
A.广泛开展农村健康教育
B.深入开展城市社区的健康教育
C.以学校、医院、工矿企业和公共场所为重点,开展各类场所的健康教育工作
D.重点人群的健康教育
E.控制烟草危害与成瘾行为
[单选题]工作票所列人员的安全责任: e) 工作班成员: 1) 熟悉工作内容、工作流程,掌握安全措施,并在工作票上履行交底 签名确认手续。2) 服从工作负责人(监护人)的指挥,严格遵守本部分和劳动纪律,对自己在工作中的行为负责,互相关心工作安全。3) 正确使用施工器具、安全工器具。
A.A.正确
B.B.错误
[判断题]列尾主机丢失的货物列车停车后,车站值班员应立即指派人员确认尾部车号,并与司机核对列车编组顺序表尾部车号。
A.正确
B.错误
[单选题]设计给定的尺寸叫( )。
A.基本尺寸
B.实际尺寸
C.极限尺寸
D.尺寸偏差
[单选题] 作业安全规则中规定“三懂三会”中描述不正确的是( )
A.懂设备结构、会使用
B.懂设备性能、会维修
C.懂设备原理、会排除故障
D.懂设备操作、会判断
[单项选择]当中国选手取得冠军时,全场在座的人都沸腾了,这属于情绪状态的()。
A. 激情
B. 心境
C. 应激
D. 冲动
E. 快乐
[单项选择]《大气污染防治法》规定,生产、进口、销售或者使用不符合规定标准或者要求的锅炉,由县级以上人民政府质量监督、()责令改正,没收违法所得,并处二万元以上二十万元以下的罚款。
A. 海事管理机构
B. 公安机关
C. 工商部门
D. 环境保护主管部门
[不定项选择题]共用题干
The Biology of Music
Humans use music as a powerful way to communicate.It may also play an important role in love.But what is music,and how does it work its magic?Science does not yet have all the answers.
What are two things that make humans different from animals?One is language,and the other is music.It is true that some animals can sing(and many birds sing better than a lot of people).However,the songs of animals,such as birds and whales,are very limited.It is also true that humans,not animals,have developed musical instruments.
Music is strange stuff.It is clearly different from language.However,people can use music to communicate things-especially their emotions.When music is combined with speech in a song,it is a very powerful form of communication.But,biologically speaking,what is music?
If music is truly different from speech,then we should process music and language in different parts of the brain.The scientific evidence suggests that this is true.
Sometimes people who , suffer brain damage lose their ability to process language.However,they don't automatically(自动地)lose their musical abilities.For example , Vissarion Shebalin , a Russian composer , had a stroke(中风)in 1953.It injured the left side of his brain.He could no longer speak or understand speech.He could,however,still compose music until his death ten years later.On the other hand,sometimes strokes cause people to lose their musical ability,but they can still speak and understand speech.This shows that the brain processes music and language separately.
By studying the physical effects of music on the body,scientists have also learned a lot about how music influences the emotions.But why does music have such a strong effect on us?That is a harder question to answer.Geoffrey Miller,a researcher at University College,London,thinks that music and love have a strong connection.Music requires special talent,practice,and physical ability.That's why it may be a way of showing your fitness to be someone's mate.For example,singing in tune or playing a musical instrument requires fine muscular control.You also need a good memory to remember the notes(音符).And playing or singing those notes correctly suggests that your hearing is in excellent condition.Finally,when a man sings to the woman he loves(or vice versa),it may be a way of showing off.
However,Miller's theory still doesn't explain why certain combinations of sounds influence our emotions so deeply.For scientists,this is clearly an area that needs further research.
What is the main idea of the passage?
A.What are the differences of human music and animal music.
B.What are the differences of human language and animal language.
C.What is music in the aspect of biology.
D.What is music in the aspect of zoology.
[单选题]再生重整催化剂干燥的目的是( )。
A.将烧焦过程中产生的水带走
B.将氯化过程中产生的水带走
C.将氧化过程中产生的水带走
D.将反应系统带来的水带走
[判断题]防触电安全防护用品主要有电容型验电器、绝缘杆、绝缘胶垫、绝缘靴、绝缘手套、防静电服等。
A.正确
B.错误
[判断题]多元醇和多元酸经缩聚反应可生产聚氨酯()
A.正确
B.错误
[单选题]( )工程是世界第一条商业运行的同塔双回路特高压输电工程。
A.哈密南-郑州±800千伏特高压直流
B.晋东南-南阳-荆门1000千伏特高压交流
C.浙北-福州1000千伏特高压交流
D.淮南-浙北-上海1000千伏特高压交流
[单选题]电雷管的主要结构有:( )、( )、电雷管装药、引火装置和延期装置。
A.管壳、加强帽
B.脚线、发火药头
C.桥丝、加强帽
D.脚线、桥丝
E.略
F.略
G.略
H.略
[单项选择]患者,男,35岁,因在高热环境下持续工作12小时而出现头痛、头晕、乏力、多汗等症状,不久体温迅速升高到41℃,并出现颜面潮红、昏迷、休克。此时最佳的降温措施应为()
A. 冰盐水灌肠
B. 物理降温+药物降温
C. 冬眠合剂
D. 静脉滴注葡萄糖盐水
E. 冰帽
[单选题]一瓶装25kg液化二氧化碳,若焊接时的流量为20L/min,则可连续使用( )。
A.10h左右
B.12h左右
C.8h左右
[简答题]偏心受压构件对称配筋时,若已经算出χ<2α’s,则需要按Ne′=fyAzs(h0-α’s)求出Azs,这时,是否还要验算《混凝土规范》的公式(7.3.4-2)?我看施老师书上没有做这个验算(见2006年版"应试指南"例5.3.7),如果验算了,书上计算的配筋恰好不满足公式(7.3.4-2)。
[单选题]检修及基建单位的工作票签发人、工作负责人名单应事先送有关()备案。
A.安监部门、调度控制中心
B.设备运维管理单位、安监部门
C.设备运维管理单位、调度控制中心
D.基建单位、安监部门
[单选题]液下喷射氟蛋白泡沫,为保证泡沫的灭火效能,泡沫喷射的流速不应大于(3 )m/s。为提高灭火效果,抗溶性泡沫一次灭火时间不应超过( )min,泡沫液的储存应按30min计算。
A.10
B.14
C.16
D.18
[填空题]Some people believe that you have to be a special kind of person to sell a product. But although it is clear that a successful salesman does need special talents, and a{{U}} (36) {{/U}}personality, many of the skills be uses are used by us all: we build and{{U}} (37) {{/U}}relationships with different kinds of people, and we listen to and take{{U}} (38) {{/U}}of what they tell us and don’t just enjoy the sound of our own{{U}} (39) {{/U}}.
A firm may depend on their own sales team and/or on the salesmanship of their distributors, wholesalers or{{U}} (40) {{/U}}. But any company needs to establish a personal relationship with its major clients (’key accounts’) and potential customers (’{{U}} (41) {{/U}}’). It is often said that people do business with people. A firm doesn’t just{{U}} (42) {{/U}}impersonally with another firm, But a person in the buying department receives personal visits from people{{U}} (43) {{/U}}the firm’s suppliers on a regular basis or in the cas
[单项选择]如商家违反《天猫规则》规定,且在处罚期内或未通过考试,限制活动报名,B类严重违规累计达到36分会限制营销活动()天。
A. 50
B. 70
C. 80
D. 90
[不定项选择题]关于爱情,正确的说法包括( )。多选
A.幼儿没有爱情体验
B.爱情是自私自利的
C.爱情有生理基础
D.爱情是一种高级情感
[单选题]中国金茂各级单位每 年至少组织( )次综合应急预案演练或者专项应急预案演练
A.0.1
B..2
C.0.3
D.0.4
[判断题]万用表在测量电阻时,指针指在刻度盘中间最准确。( )
A.正确
B.错误
[单项选择]边际成本曲线是由()决定的。
A. 总固定成本曲线的斜率
B. 总可变成本曲线的斜率
C. 总成本曲线的斜率
D. 既是总成本曲线的斜率也是总可变成本曲线的斜率
[多选题]被视为重大危险源的矿井有( )。
A.高瓦斯矿
B.煤与瓦斯突出的矿
C.煤层自然发火期小于等于8个月的矿
D.水文地质条件极复杂的矿
[单项选择]班船运费的计费方法一般以()为准。
A. W
B. M
C. W/M
D. W+M
[判断题]OLT与ONU间是明显的点到点连接,上行和下行信号传输发生在不同的波长窗口中
A.正确
B.错误
[判断题]进入带电区域作战时,必须穿戴电绝缘服、绝缘靴、绝缘手套等防护装备,携带漏电探测仪、绝缘胶垫、接地线(棒)等器材,当发生带电导线击伤作战人员时,应迅速利用绝缘物体使触电者脱离电源,并采取急救措施。
[单选题]隧道底部,应有不少于( )的横向排水坡使水流向排水沟。
A.1 ‰
B.1.5 ‰
C.2 ‰
D.3 ‰
[简答题]988. 车钩托梁采用M22螺栓者须安装背母和( )开口销,开口销须卷起。
[单选题]进行水域救援时,必须着( ),并使用安全绳保护。
A.抢险教援服
B.防化服
C.战斗服
D.救生衣或者佩戴潜水装具
[单选题]在《民用航空通信导航监视工作规则》中规定,设备和人员安全操作制度应当至少包括:设备使用安全操作程序、设备维护和维修安全操作程序、()、设施设备和人员防雷保护规定。
A.电信人员安全用电防护规定
B.电信人员安全用电规定
C.人员安全用电防护规定
D.电信人员安全防护规定