热门试题:
[判断题]从事电力通信相关工作的所有人员应严格遵守本规程。
A.正确
B.错误
[单项选择]镰状红细胞贫血的异常血红蛋白中,哪个氨基酸取代了正常珠蛋白β链的谷氨酸残基
A. 亮氨酸
B. 赖氨酸
C. 缬氨酸
D. 丙氨酸
E. 天冬氨酸
[多选题]斜角肌间隙描述正确的是( )
A.由前、中斜角肌与第1肋形成
B.内有臂丛神经通过
C.内有锁骨下动脉通过
D.内有锁骨下静脉通过
E.内有膈神经通过
[单选题]
糖尿病饮食治疗中三大营养素含量占饮食总热量百分比分别为碳水化物、蛋白质、脂肪
A.40%~50%、50%、10%
B.15%、60%、30%
C.50%~60%、15%、30%
D.20%~30%、60%、20%
E.30%~40%、50%、20%
[单项选择]变频空调节电效果突出,所谓“变频”一般是指()
A. 交流变频
B. 直流变频
C. 蓄冷技术
[判断题]进行SF6气体湿度带电检测前后,确认被测设备六氟化硫气体压力在正常范围内。
A.正确
B.错误
[单项选择]红霉素联用下列哪种药对吸收有影响
A. 氨茶碱
B. 碳酸氢钠
C. 维生素B6
D. 维生素C
E. 沐舒坦
[判断题]以下描述是否正确:发生中度颠簸时,乘务员应立即停止一切服务,在原地踩好餐车刹车,将热饮料放入餐车内或放在地板上。
A.正确
B.错误
[多选题]H级水泥技术指标有( )。
A.试验深度2440m
B.最短稠化时间180min
C.水灰比0.38
D.适用井深0-1830m
[单选题]低压架空线路导线型号的选择,采用铝芯导线时,E类供电区域主干线导线截面应不小于()mm2。
A.50
B.70
C.90
D.120
[判断题]骨髓穿刺后局部加压,至少按压两分钟 ( )
A.正确
B.错误
[多项选择]硬膜外导管在体内断管的原因有()
A. 置管时遇阻力
B. 置管时遇阻力仅向外拔导管
C. 导管在体内打结强行拔管
D. 导管在体内产生化学反应
E. 退针时旋转穿刺针,斜口切割导管
[判断题]“食部”为80%的食物就说明这种食物只有20%可食用。
[填空题]由变量泵供油的某液压系统,额定工作压力为15Mpa,则该系统的溢流阀的调整压力可设为()。
[单选题]急性上呼吸道感染最常见的细菌为( )
A.流感嗜血杆菌
B.溶血性链球菌
C.肺炎球菌
D.葡萄球菌
E.革兰氏阴性杆菌
[单项选择]A. Call a taxi for the woman. B. Ride a bike with the woman.
C. Take the woman to the bus station. D. Drive the woman to the railway station.
[判断题]当有两个及两个以上消防控制室时,应确定一个主消防控制室。
A.正确
B.错误
[单选题] 《国家职业病防治规划(2009-2015年)》提出的基本原则之一是:预防为主,防治结合。坚持标本兼治、重在治本,控制职业病( ),采取工程技术、个体防护和健康管理等综合治理措施,预防控制职业病危害。
A. 危害源头
B. 继续漫延
C. 无序治疗
D. 危害程度
[单选题]P型半导体少数载流子是( )。
A.A、空穴
B.B、质子
C.C、电子
D.D、中子
[单项选择]传统型的乌龙茶中()程度最轻的茶是包种茶。
A. 发酵
B. 揉捻
C. 杀青
D. 烘炒
[单项选择]新安装和大修后的低压线路和设备的绝缘电阻不低于()。
A. 0.2MΩ
B. 0.3MΩ
C. 0.5MΩ
[多项选择]征收车船税,可以()。
A. 适当集中一部分资金进行交通设施建设
B. 有利于配合有关部门加强交通管理
C. 保证车船行驶安全
D. 促进交通运输业的发展
[单选题]轨枕按照用途分主要有( )、岔枕和桥枕。
A.木枕
B.混凝土枕
C.普通轨枕
D.钢枕
[多选题]检修工具及安全防护用品,必须( )。
A.经常保持完好,发现不良的,应及时更换
B.检修人员使用前,必须进行检查
C.工长每月检查1次
D.电务段每年3月前组织车间检查试验(包括绝缘工具)1次
[判断题]( )《技规》规定,按自动闭塞法运行的列车不准退行(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);
A.正确
B.错误
[单选题]善变的王熙凤属于( )
A.胆汁质
B.多血质
C.黏液质
D.抑郁质
[单选题]反馈控制系统中,信号从输入端沿箭头方向到达输出端的传输通路称为( )。
A.前向通路
B.主回路
C.主反馈通路
D.内回路
[单项选择]When the book reviewer discusses the book The Joy of Laziness, he is ______.
A. biased.
B. equivocal.
C. impartial.
D. dogmatic.
[多选题]高速铁路维修作业单位登记的________等必须真实有效且符合规定,并在“上海铁路局营业线施工、检修作业派遣单”中填写清楚。
A.作业项目
B.维修等级
C.小组长姓名
D.维修负责人职务
[单选题]某工人经过安全教育培训后,仍然未戴安全帽就进入现场作业施工。从事故隐患的角度来说,这种情况属于( )。
A.人的不安全行为
B.物的不安全状态
C.管理上的缺陷
D.环境的缺陷
[多选题]以下哪几种模式车屏不联动打开
A.AM-C
B.SM-C
C.AM-I
D.SM-I
[单选题] 依据《中国南方电网有限责任公司应急管理规定》第四十一条的规定,下列不属于公司系统应急预警等级的有( )。
A. 白色预警
B. 红色预警
C. 橙色预警
D. 黄色预警
[判断题]CIR设备在GSM-R区段运用时,乘务员应在选定通信模式后,在CIR设备操作显示终端上正确设置车次号、进行车次功能号注册操作,并确认车次和机车功能号注册成功。
A.正确
B.错误
[不定项选择题]共用题干
The Only Way Is Up
Think of a modern city and the first image that come to mind is the skyline.It is full of great buildings,pointing like fingers to heaven.It is true that some cities don't permit buildings to go a-bove a certain height.But these are cities concerned with the past.The first thing any city does when it wants to tell the world that it has arrived is to build skyscrapers.
When people gather together in cities,they create a demand for land.Since cities are places where money is made,that demand can be met. And the best way to make money out of city land is to put as many people as possible in a space that covers the smallest amount of ground.That means building upwards.
The technology existed to do this as early as the 19th century.But the height of buildings was limited by one important factor. They had to be small enough for people on the top floors to climb stairs .People could not be expected to climb a mountain at the end of their journey to work,or home.
Elisha Otis,a US inventor,was the man who brought us the lift-or elevator,as he pre- ferred to call it.However,most of the technology is very old.Lifts work using the same pulley system the Egyptians used to create the Pyramids.What Otis did was attach the system to a steam engine and develop the elevator brake,which stops the lift falling if the cords that hold it up are broken.It was this that did the most to gain public confidence in the new invention.In fact,he spent a number of years exhibiting lifts at fairgrounds,giving people the chance to try them before selling the idea to architects and builders.
A lift would not be a very good theme park attraction now.Going in a lift is such an everyday thing that it would just be boring.Yet psychologists and others who study human behavior find lifts fascinating.The reason is simple.Scientists have always studied animals in zoos.The nearest they can get to that with humans is in observing them in lifts.
“It breaks all the usual conventions about the bubble of personal space we carry around with us—and you just can't choose to move away”,says workplace psychologist,Gary Fitzgibbon.Be-ing trapped in this setting can create different types of tensions,he says.Some people are scared of them.Others use them as an opportunity to get close to the boss.Some stand close to the door. Others hide in the corners.Most people try and shrink into the background.But some behave in a way that makes others notice them.There are a few people who just stand in a corner taking notes.
Don't worry about them.They are probably from a university.
Which of the following best describes the experience of going in a lift now?
A.Fascinating.
B.Uninteresting.
C.Frightening.
D.Exciting.