热门试题:
[单选题] 防爆输转泵适用于输转可燃性液体、强酸强碱等大部分危险液体，手持操作，使用方便其输送强酸碱液体最大流量为( )
A.50 L/min
B.60 L/min
C.70 L/min
D.80 L/min
[简答题]用人单位与劳动者发生劳动争议，当事人有何种办法协商解决？
[判断题]耐火电缆由于增加了耐火云母层，所以不怕火烧。
A.正确
B.错误
[多选题]破伤风是破伤风梭菌侵入人体并生长繁殖产生毒素而引起阵发性肌肉痉挛的特异 性感染。破伤风梭菌的主要致病因素为:
A.痉挛毒素
B.溶血毒素
C.内毒素
D.肠毒素
[判断题]测量目标表面如果温度一致，在红外热像仪显示屏上将只能看到单一的画面
A.正确
B.错误
[填空题]烧结生产是依靠（）系统所形成的负压迫使空气，通过烧结混合料以帮助混合料中的燃料获得高温来固结含铁物料（）的工艺过程。
[单选题]对于供电可靠性,下述说法中正确的是( )。
A. 所有负荷都应当做到在任何情况下不中断供电;
B. 一级和二级负荷应当在任何情况下不中断供电;
C. 除一级负荷不允许中断供电外,其它负荷随时可以中断供电;
D. 一级负荷在任何情况下都不允许中断供电、二级负荷应尽可 能不停电、三级负荷可以根据系统运行情况随时停电。
[不定项选择题]共用题干
The Northern Lights
The Sun is stormy and has its own kind of weather It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun,the stronger the solar wind.
The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.
The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles. As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky. Each atmospheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.
Watching auroras is fun and exciting,but normally you can only see them in places far north like Alaska and Canada. The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate,flicker,or even move like waves.During solar maximum,auroras are seen as far south as Florida,even Mexico!
Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly. A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.
We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime. We know you will never forget it!
The Sun's gravity is too weak to keep its plasma from flowing to the Earth.
A.Right
B.Wrong
C.Not mentioned
[判断题]雷雨时，应停止室内起重作业。
A.正确
B.错误
[单选题]车间每日汇总班组研判情况，核准签字后于每日（ ）时上报安环部，并对上报内容真实性负责。
A.8
B.9
C.10
D.11
[单项选择]定期排污应在（）进行
A. 高负荷，高水位
B. 低负荷，高水位
C. 高负荷，低水位
D. 低负荷，低水位
[判断题]车工可以戴手套操作。( )
A.正确
B.错误
[单选题]超高热危象者体温应迅速降至：（ ）
A.36.5℃
B.38.5℃
C.39.5℃
D.37.5℃
E.37℃
[填空题]在机车使用单独制动并且制动缸压力大于（ ）KPa时，电制动不可用。
[填空题]三显示自动闭塞区段,进站色灯信号机显示一个黄色灯光时,准许列车经道岔( )位置,进入站内正线准备停车。
[判断题]电工用小扁錾是用来錾打混凝土结构建筑物木榫孔的工具。 （ ）
A.正确
B.错误
[单选题]115依靠溶解气体的弹性膨胀能将石油驱向井底的驱动方式称为（）驱动。
A.(A)气压
B.(B)弹性
C.(C)水压
D.(D)溶解气
[单项选择]班级组织的发展经历的第一阶段是（）
A. 团体要求与个人属性之间的矛盾阶段
B. 个人属性之问的矛盾阶段
C. 团体要求架构内的矛盾
D. 团体要求与团体文化之间的矛盾
[单选题]需要改变PSD关门时报警声音的频率，要通过修改（ ）的内部参数。
A.DCU
B. PSC
C.IFM
D.PSA
[单项选择]下列哪一项不属于麻黄汤与桂枝汤共有的症状
A. 发热
B. 恶风寒
C. 喘
D. 脉浮
[判断题]阀控铅酸蓄电池应采用单体为6V 的蓄电池。
A.正确
B.错误
[单选题]风沙地区变电站，户外所有端子箱、机构箱、汇控柜、智能柜防尘罩密封应完好，()通风口，但应满足散热功能。
A.A.不留
B.B.可留
C.C.应有
D.D.可不留
[单选题]开采容易自燃和自燃的煤层,采用全部充填采煤法时,( )采用可燃物作充填材料,采空区和三角点必须充填。
A.不得
B.严禁
C.必须
D.可以
[单选题]票据真伪核验以及票据业务资金划转由（）审批授权
A.零级
B.一级柜员
C.支行副行长
D.营业室经理
[多项选择]无砟轨道轨枕（板）在（），应进行型式检验。
A. 用户提出要求时
B. 厂名变更时
C. 批量投产前
D. 原材料、配合比、工艺有改变时
E. 正常生产三年时
[单选题]( )主要用于运送和保护脊(颈)椎受伤人员。(中)
A.躯体固定气囊
B.肢体固定气囊
C.救生三角架
D.折叠式担架
[单项选择]孕妇，30岁，孕1产0，妊娠40周，临产后出现协调性宫缩乏力，宫颈扩张4cm，胎囊凸，无头盆不称。护士应首先协助处理的是（ ）
A. 镇静剂
B. 等待产程自然进展
C. 缩宫素静脉滴注
D. 人工破膜
E. 剖宫产术
[单选题]年度需求计划预测是根据年度综合计划和预算，结合（），进行科学预测，编制形成的全年物资和服务总需求。
A.历年采购需求
B.历年采购数据
C.历年采购计划
D.历年实际物资和服务需求
[单选题]屋面工程所用的防水、保温材料，产品质量应由经过（ ）对其资质认可，质量技术监督部门对其计量认证的质量检测单位进行检测。（GB50207—2012《屋面工程质量验收规范》3.0.6）
A.A.县级以上建设行政主管部门
B.B.市级以上建设行政主管部门
C.C.省级以上建设行政主管部门
D.D.国家级建设行政主管部门
[单选题] 管道系统水压试验时,系统最高点应装( )。
A.排水阀
B.放气阀
C.单向阀
D.截止阀
