题目详情
题目详情:

[单项选择]下面哪一项关于菌斑的描述是不正确的
A. 菌斑是无色、柔软的物质
B. 肉眼不易辨认菌斑的存在
C. 菌斑显示剂可使菌斑染色
D. 菌斑是牙周病的主要病因刺激物
E. 菌斑会在去除12小时后在牙面重新形成

热门试题:

[单项选择]The phrase "new talent" (Line 6, Para. 1) means ______.
A. new direction
B. new directors
C. new programs
D. skilled young dancers
[多选题]以下属于窃电基本手法是( )。
A.用外部电源使电能表倒转
B.串入电阻降压
C.改变电路接法
D.短接电流回路
[判断题]测量的准确度要求较高时,容量瓶在使用前应进行体积校正。
A.正确
B.错误
[单选题]在施工单位预验合格的基础上,组织正式竣工验收的是(  )
A.施工单位
B.监理单位
C.建设单位
D.质检单位
[单项选择]


A. growing
B. grow
C. planting
D. plant
[单选题]机车在车站要求显示信号时,机车鸣笛鸣示方式是( )。
A.一短一长声
B.二短一长声
C.一长一短声
D.一长二短声
[简答题]炉渣碱度对焦炭熔损反应的影响。
[单项选择]下列是Windows 2000 Server重要的新功能的是
A. 可恢复性文件系统NT File System
B. 活动目录服务
C. 自动硬件配置检测
D. 主域控制器
[填空题]司机控制器调速装置的用途是完成机车()、()和进行电气制动力调节。
[多选题]员工伤亡事故按事故原因包括( )。
A.物体打击
B.高处坠落
C.电伤
D.触电
[单选题]肾小球滤过率是指( )。
A.每分钟每侧肾脏生成的尿量
B.每分钟两侧肾脏的血浆流量
C.每分钟每侧肾脏生成的超滤液量
D.每分钟两侧肾脏生成的超滤液量
[单项选择]甲亢危象病人紧急救护的最关键的措施是()
A. 降低甲状腺素水平
B. 去除诱因
C. 正水、电解质紊乱
D. 补充能量、维生素
[单项选择]以下关于网络体系结构的描述中,错误的是()。
A. 网络体系结构是抽象的,而实现是具体的
B. 层次结构的各层之间相对独立
C. 网络体系结构对实现所规定功能的硬件和软件有明确的定义
D. 当任何—层发生变化时,只要接口保持不变,其他各层均不受影响
[单项选择]为了更好地适应新时期公安队伍建设的需要,健全公安队伍的内务制度,公安部根据《人民警察法》的规定,于( )颁布实施《公安机关人民警察内务条令》.为公安队伍的内务建设提供了法律依据和保障.
A. 36647
B. 37012
C. 36678
D. 37043
[判断题]客专线道岔心轨采用普通50km/m钢轨钢轨组合结构。
A.正确
B.错误
[多项选择]下列哪些为法洛四联症的特点()
A. 收缩期杂音
B. 发绀
C. 杵状指(趾)
D. 可见剑突下抬举性搏动
E. 肺动脉狭窄越重,杂音越明显
[单选题]轨道静态几何不平顺容许偏差管理值中,限速管理值为保证列车运行平稳性和舒适性,需立即限速并进行整修的( )标准。
A.A.质量检查
B.B.质量管理
C.C.质量控制
D.D.质量评定
[单选题]出租车是城市人民生活中不可缺少的( )工作
A.私人交通
B.城市私人交通
C.单位交通
D.长途运输
[多选题] 眼面部防护用品是为防御眼面部不受烟雾、尘粒、金属火花和飞屑、热、( )等伤害而配备的个人防护用品。
A.电磁辐射
B.激光
C.化学飞溅物
D.静电
[单项选择]依据2003年美国胸科医师协会肺癌的诊治指南,可以考虑接受一侧全肺切除术的前提条件是患者第1秒用力呼气量(FEV1)所占预计值比例或绝对值分别大于()。
A. 50%,1L
B. 60%,1.5L
C. 70%,1.5L
D. 80%,2L
E. 90%,2L
[单选题]2.可确诊输卵管妊娠流产或破裂的辅助检查是
A.妊娠试验
B.腹部检查
C.血常规检查
D.X线检查
E.后穹窿穿刺
[单选题] 《人民币银行结算账户管理办法》规定,存款人更改名称,但不改变开户银行及账号的,应于( )内向开户银行提出银行结算账户的变更申请,并出具有关部门的证明文件。
A.2日
B.2个工作日
C.5日
D.5个工作日
[判断题]不满十六周岁的人有违法行为的,不予行政处罚。( )
A.正确
B.错误
[判断题]危化品现场疏散,将危险区域人员疏散到下风向安全区域。()
A.正确
B.错误
[单选题]十字轴式万向节允许相邻两轴的最大交角为( )。
A.10°~15°
B.15°~20°
C.20°~25°
D.25°~30°
[单项选择]

The "standard of living" of any country means the average person’s share of the goods and services which the country produces. A country’s standard of living, (1) , depends first and (2) on its capacity to produce wealth." Wealth" in this sense is not money, for we do not live on money (3) on things that money can buy. "Goods" such as food and clothing, and "services" such as transport and " (4) ". A country’s capacity to produce wealth depends upon many factors, most of (5) have an effect on one another. Wealth depends (6) a great extent upon a country’s natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a (7) climate; other regions possess none of them.
Next to natural resources (8) the ability to turn them to use. China is perhaps as well (9) as the USA in natural resour
A. neutral
B. favorable
C. virtuous
D. marine

[单选题]施工现场及周围的悬崖、陡坎、深坑、高压带电区等危险场所均应设可靠的防护设施及安全标志:坑、沟、孔洞等均应铺设符合安全要求的盖板或设可靠的围栏、挡板及( )。危险场所夜间应设警示灯。
A.消防标志
B.安全标志
C.环境标志
D.安全设施
[判断题]依照《国家电网公司电力调度自动化系统运行管理规定》国网(调/4)335-2014的要求、各级通信运行管理部门应保证自动化数据传输通道的速率和可靠性,满足自动化系统运行要求。
A.正确
B.错误
[多选题]  年,天津民警范作为利用工作之余自费创办的全国首家以“揭露犯罪伎俩,传授防范技巧,掌握自救手段”为目的的安全防范网站——天津作为网正式开通了。网站包含防范社区、津门卫士、警营风采、在线咨询、留言板等板块,积极向人民群众宣传安全防范知识,在获得很高点击率的同时,赢得了众多百姓的一致好评。该段材料说明:
A.民警在进行宣传群众时,可以采用更易被大众接受的方式进行。
B.互联网信息容量大,传播速度快,覆盖范围广,是一种新兴的宣传群众的方式
C.民警不光可以利用互联网进行法治宣传,也可以利用互联网对群众进行自救指导
D.做好对群众的宣传工作,当务之急是将网站内容变得丰富多彩
[单项选择]在工程项目招标阶段,监理工程师应根据()来确定参与投标企业的类型及资质等级。
A. 工程的类型及其隶属关系
B. 工程的规模及其等级
C. 业主的要求及意图
D. 工程的类型、规模和特点
[多选题]带电红外检测表面温度判断法主要适用于( )引起发热的设备。
A.电压致热型
B.电流致热型
C.电磁效应
D.涡流效应
[判断题]氧气胶管与乙炔胶管不得互相混用和代用。()
A.正确
B.错误
[判断题]《担保法》第四条规定,第三人为债务人向债权人提供担保时,可以要求债务人提供反担保。( )
A.正确
B.错误
[不定项选择题]共用题干 Hitchhiking

When I was in my teens(十几岁)and 20s,hitchhiking was a main form of long-distance transport.The kindness or curiosity of strangers_______(51)me all over Europe,North America,Asia and southern Africa. Some of the lift-givers became friends,many provided hospitality_______(52)the road.
Not only did you find out much more about a country than_______(53)traveling by train or plane,but also there was that element of excitement about where you would finish up that night. Hitchhiking featured importantly in Western culture.It has books and songs about it. So what has happened to_______(54)?
A few years ago,I asked the same question about hitchhiking in a column on a newspaper._______(55)of people from all over the world responded with their views on the state of hitchhiking.
"If there is a hitchhiker's_______(56)it must be Iran,"came one reply.Rural Ireland was recommended as a friendly place for hitchhiking,_______(57)was Quebec,Canada."If you don't mind being berated(严厉指责)for not speaking French."
But while hitchhiking was clearly still alive and well in many parts of the world,the_______( 58 ) feeling was that throughout much of the west it was doomed(消亡).
With so much news about crime in the media,people assumed that anyone on the open road without the money for even a bus ticket must present a danger. But do we_______(59)to be so wary both to hitchhike and to give a lift?
In Poland in the 1960s,_______(60)a Polish woman who e-mailed me,"the authorities introduced the Hitchhiker's Booklet. The booklet contained coupons for drivers,so each time a driver _______(61)somebody,he or she received a coupon.At the end of the season,_______(62) who had picked up the most hikers were rewarded with various prizes.Everybody was hitchhiking then."
Surely this is a good idea for society.Hitchhiking would increase respect by breaking down _______(63)between strangers. It would help fight_______(64)warming by cutting down on fuel consumption as hitchhikers would be using existing fuels.It would also improve educational standards by delivering instant_______(65)in geography,history,politics and sociology. _________(63)
A.fences
B.barriers
C.gaps
D.stones
[单项选择]某催化剂在小型固定流化床反应进油空速为20h-1,进油量为30克,液收为20克,损失为1.0%,催化剂藏量为180克,则剂油比为()
A. 4
B. 5
C. 6
D. 7
[填空题]在通常情况下,课堂气氛可能分成积极的、______和对抗的三种类型。

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