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[判断题]氢气具有最大的扩散速度和很高的导热性,被公认为是一种极危险的易燃易爆气体。( )
A.正确
B.错误

热门试题:

[多选题]下列关于端子排图的描述,正确的有( )。
A.端子排图是指端子排与屏内设备、屏外设备连接关系的图
B.端子排图的视图方法是从背面向正面
C.端子排图需表明端子类型、数量以及排列顺序
D.端子排图示安装接线图的重要组成部分
[填空题]我国义务教育的教学计划应当具备三个基本特征:______、______、基础性。

[单选题]下列有关急性小肠扭转临床表现的描述中,错误的是
A.多见于老年人
B.多发生于饱餐后剧烈活动时
C.起病急剧,腹痛剧烈
D.频繁呕吐
E.可出现休克
[单选题]3.151. 第151题
有中性线的三相供电方式称为三相四线制,它常用于低压配电系统。
A.正确
B.错误
[单选题]安全帽使用时,应将帽箍调紧,防止工作中前倾后仰或其他原因造成滑落。
A.正确
B.错误
C.略
D.略
E.略
F.略
[多选题]隧道工程质量控制时,施工单位应对(  )等涉及结构安全和使用功能的分部工程及关键项目进行检验,监理单位按规定进行平行检验或见证取样检测。
A.隧道限界
B.衬砌厚度、强度
C.衬砌背后回填
D.监控量测
E.防水
[多选题]高速铁路有砟轨道主要采用( )三种类型扣件。
A.弹条IV型
B.弹条V型
C.FC型
D.SFC型
[单选题]372、冷库温度范围是
A.2-10℃
B.4-10℃
C.2-8℃
D.4-8℃
[填空题]上消化道大出血手术时应按顺序全面仔细检查。首先检查常见出血部位________和________;第二步检查有无________和________;第三步检查________;经过上述检查仍未发现病变,而胃十二指肠内确有积血,应进行________探查。
[多项选择]气管插管的优点()。
A. 防止反流和误吸
B. 便于呼吸管理,保证呼吸道通畅
C. 远离手术部位,便于手术操作
D. 改善患者通气
E. 增大有效肺泡通气量
[判断题]ISO9001:2015标准可供组织内部使用,也可用于认证或合同目的。
A.正确
B.错误
[单选题]在提速道岔上进行养护维修时,应注意观察尖轨跟部限位器A、B块的间隙变化。当道岔位于跨区间无缝线路区段时,在锁定温度下,间隙应符合( )的要求。
A.7.0mm±1.5 mm
B.6.0mm±1.5 mm
C.7.0mm±2 mm
D.6.0mm±2 mm
[单选题]While the technological advancements that have brought us tailor-made online shopping at the click of a button is worth celebrating,the delirium that surrounded Amazon's Prime Day this week has left a bad taste in my mouth.Technological progress brings its own challenges,and the concerns of my constituents who have worked at our local Amazon fulfilment centre have only served to reinforce this view.There is something deeply disturbing about the sheer number of accusations being levelled at Amazon's working conditions,and that its warehouses seem to be filled with staff who say they are afraid to take time off sick.As one of the most successful companies in the world,Amazon appears to be failing the staff who keep this retail behemoth operating smoothly on a day-to-day basis,and who are therefore the real driving force behind the world's iechnological revolution.With a shocking 600 ambulance calls made co Amazon warehouses in the United Kingdom over the last three years,it is no surprise that in a member's survey of workers conducted by GMB,one worker described employment there as akin to"living in a prison".The strict targets that,are apparently imposed on staff mean that 70%of staff feel like they are given disciplinary points unfairly,while 89%believe they are being exploited.Moreover,there have been reports of an employee in laLe pregnancy being forced to stand for 10 hours a day,and ambulance calls due to"eleclric shocks"and"major trauma".An expose by Vice said that one former employee claimed to be hauled in for disciplinary procedures"after failing to call in sick from hospital following an epileptic seizure at work".These extensive reports into working practices at Amazon are clearly alarming,and suggest that while companies like Amazon reap the financial rewards of technological progress,they appear to be neglecting the health and safety of their workforce.I have therefore written a letter to the prime minister urging her to take a stand and ensure furt,her regulation is put into place to see that,Amazon's working conditions are reasonable and humane.What we need is a government that actively intervenes in these workplace disputes,and can address the problems that come with technological change and the unashamed desire to save money at the expense of the weUbeing of the worUorce,Implementing Labour's 20-point plan for security and equality at work would be a welcome start.By empowering trade unions and enforcing regulation to ensure safe and healthy environments,we can take a stand against companies like Amazon,whose workforce consistenLly feels ex-ploited and afraid.While the government continues to flounder,it is important.for us to reflect on whether the convenience of websites such as Amazon are truly worth the cost to workers who claim to suffer from the inadequate facilities and awful environments that are pervasive in these warehouses.My hope is that the more we shine the light on these working conditions,the more pressure Amazon will face to finally act. The expression"levelled at"(Line l,Para.2)is closest in meaning to
A.directed against
B.argued for
C.toleranL with
D.different from
[简答题]强令他人违章冒险作业,因而发生重大伤亡事故或者造成其他严重后果的,情节特别恶
劣的,处( )有期徒刑。
[填空题]管道系统试压前应具备,管线上所有临时用的堵板、夹具是否( )等。
[多选题]:下列哪些信贷行为容易产生案件()。
A.小额贷款“一手清”;
B.对借款人提供的申贷资料审核不严;
C.在资料审核环节、贷前调查环节、合同签订环节以及放款环节未建立有效的制约机制;
D.应执行受托支付而未执行的
[判断题]来料外观,块度、粉率、夹杂、洁净度等符合使用标准。( )
A.正确
B.错误
[判断题]2.88 车辆管理所办理机动车驾驶人考试业务,应当遵循严格.公开.公正的原则。
A.正确
B.错误
[单选题]敞车车体外胀重车( )。
A.≤40mm
B.≤60mm
C.≤80mm
D.≤150mm
[多项选择]带式输送机驱动装置主要有()等组成。
A. 电动机
B. 液力耦合器
C. 减速器
D. 驱动滚筒
[单选题]项目管理是从(  )以后发展起来的。
A.第一次世界大战
B.第二次世界大战
C.19世纪50年代
D.19世纪70年代
[单项选择]某无牙颌患者,上下颌弓位置关系正常,牙槽嵴丰满,双侧上颌结节颊侧骨突,倒凹明显。此患者在全口义齿修复前需进行
A. 唇颊沟加深
B. 上颌结节修整
C. 牙槽骨修整
D. 唇系带修整
E. 颊系带修整
[判断题]斜道脚手板构造应符合下列规定:脚手板横铺时,应在横向水平杆下增设纵向支托杆,纵向支托杆间距不大于500mm。
A.正确
B.错误
[填空题]网关的作用是实现______的转换。
[判断题]元朝和明前期是唐宋变革和晚明到清的中国仅是社会高度发展的两段之间的过渡。
[单选题]在有限空间内进行涂装作业,因通风设备故障,可开启井盖进行自然通风后,经准入检测气体合格后,进入有限空间内进行作业。
A.正确
B.错误
C.略
D.略
E.略
F.略
[多项选择]华支睾吸虫生活史的内容主要包括()
A. 虫卵需第一宿主淡水螺吞食
B. 人或哺乳动物食入尾蚴而发病
C. 在螺体内孵出毛蚴,经胞蚴、雷蚴、尾蚴阶段
D. 成虫寄生于人体小肠且排卵
E. 尾蚴附着于第二中间宿主淡水鱼虾
[单选题]完整的航后报告(PFR) ( )
A.可通过MCDU读出
B.只有在地面通过打印机打印
C.只能在空中通过打印机打印
[填空题]自升式平台库美装置中有一个旁通阀,其功用是在紧急情况下直接提供()psi的关闭压力。
[单项选择]酒店消防联动控制系统对保护建筑物内部安全有着重要的作用,下列对整个系统所包含设施设备叙述完整的是哪一项()?(1)室内消火栓(2)水喷淋(3)电动防火门(4)防火卷帘(5)消防广播(6)防烟排烟设备(7)电动防火阀(8)消防警铃
A. (1)(2)(3)(4)(7)(8)
B. (1)(3)(5)(6)(7)(8)
C. (1)(3)(4)(5)(6)(8)
D. 所有选项皆是
[判断题]检修设备停电,应把各方面的电源完全断开(任何运行中的星形接线设备的中性点,应视为带电设备)。
A.正确
B.错误
[单项选择]胸脘痞闷,按之则痛,或咳痰黄稠,舌苔黄腻,脉滑数者,治宜选用()
A. 温胆汤
B. 茯苓丸
C. 滚痰丸
D. 小陷胸汤
E. 清气化痰丸
[不定项选择题]马克思主义的灵魂是( )。
A.解放思想
B.实事求是
C.与时俱进
D.群众路线
E.独立自主
[单选题]东风7型内燃机车的排障器距轨面的距离为( )。
A.40~100mm
B.60~120mm
C.80~160mm
D.100~180mm
[判断题]在不得已情况下,列车必须分部运行时,对遗留车辆采取防护、防溜措施后;可不留人看守,直接运行至前方站。
A.正确
B.错误
[单项选择]输入“?”的方法是:按()的同时,按“?”。
A. ALT
B. CTRL
C. SHIFT
D. F4
[单选题]下列选项中,( )是电力系统中的通道?(0.5分)
A.载波通道
B.微波通道
C.光纤通道
D.以上都是

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