热门试题:
[多选题] 乙烯精馏塔冻塔的原因有( )。
A.裂解气干燥不合格
B.碳二进料干燥器使用时间过长
C.碳二加氢反应器投用时未还原
D.乙烯精馏塔压差过大
[单选题] 气测录井资料录取要求,热真空蒸馏气分析时,在记录曲线上标注( )样品深度,并填写分析记录。(出自SY/T5788.2-2018)
A.全烃
B.组分
C.钻并液
D.气体
[多选题]电缆穿入电缆管时有哪些规定
A.铠装电缆与铅包电缆不得穿入同一管内
B.一根电缆管只允许穿入一根电力电缆
C.电力电缆与控制电缆不得穿入同一管内
D.裸铅包电缆穿管时，应将电缆穿入段用麻或其它柔软材料保护，穿送外不得用力过猛
[判断题]接线组别不同的变压器可以并列运行。 ( )
A.正确
B.错误
[多项选择]输血的目的是（）。
A. 纠正酸碱平衡
B. 纠正贫血
C. 补充血小板
D. 维持水电解质平衡
E. 增加免疫力
[单选题](37739)F8型电空制动机紧急灵敏度试验时辅助室压力降至40KPa的时间应在( )以内。(1.0分)
A.5s
B.10s
C.15s
D.20s
[判断题]绝缘油取样前应排除取样管路中及取样阀门内的空气和“死油”
A.正确
B.错误
[判断题]尽头线是指站内股道终端设置车挡的线路。
A.正确
B.错误
[单选题]混凝土无损检测中，主要用于大面积混凝土质量检测的方法是()。
A.回弹法
B.拔出法
C.瞬态激振时域频域分析法
D.地质雷达法
[不定项选择题]多种原因可以影响人体能量代谢，人体可以根据能量代谢增长情况调节机体器官功能。
调节人体产热活动最重要的体液因素是
A.去甲肾上腺素
B.肾上腺素
C.甲状腺激素
D.甲状旁腺素
E.生长素
[单选题]用成人血压计袖带给幼儿测血压时，其测量的数值 （ ）
A.偏低
B.偏高
C.脉压差大
D.脉压差小
[单项选择]下列三种焊接方法电弧的紫外线强度不同，（）时强度最大
A. 等离子弧焊
B. 氩弧焊
C. 手工电弧焊
[单选题]In a move that could revolutionize the way we buy groceries,Amazon opens its first supermarket without checkouts-human or self-service--to shoppers on Monday.Amazon Go,in Seattle,has been tested by staff for the past year.It uses hundreds of ceiling-mounted cameras and electronic sensors to identify each customer and track what items they select.Purchases are billed to customers'credit cards when they leave the store On entering the store,shoppers walk through gates,swiping their smartphones loaded with the Am-azon Go app.Then they are free to put anything into their own shopping bags.With the help of sensors on the shelves,items are added to customers'Amazon Go account as they pick them up-and delete any they put back.And an electronic receipt is issued as they exit The store opened to employees of the online retail giant in December 2016 and had been expected to allow the public in more quickly.But there were some teething problems with correctly identifying shoppers of similar body types--and children moving items to the wrong places on shelves,according to an Amazon insider.Gianna Puerini said the store had operated well during the test phase Hundreds of infra-red ceiling cameras have been trained over the last year to differentiate between customers as they move around the store,and between items for sale,even those with similar appearances.There are weight sensors on the shelves to help indicate if an item has been taken or put back And some items carry a visual dot code,like a bar code,to help cameras identify them.Amazon isnt offering any information on how accurate the system is.One thing we do know:they're on to the less-than-honest.A New York Times journalist had a go at shoplifting some cans of soft drink,but the system spotted it and put them on his bill Amazon has not said if it will be opening more Go stores,which are separate from the Whole Foods chain that it bought last year for$13.7bn（E10.7bn）.As yet the company has no plans to introduce the technology to the hundreds of Whole Foods stores.However,retailers know that the faster customers can make their purchases,the more likely they are to return.Making the dreaded supermarket queue a thing of the past will give any retailer a huge advantage over its competitors In its third quarter results in October,Amazon for the first time put a figure on the revenues generated by its physical stores:S 1.28bn.Yet almost all of that was generated by Whole Foods.While its stores may not yet be money spinners,analysts have said Amazon is using them to raise brand awareness and promote its Prime membership scheme.Brian Olsavsky,Amazon chief financial officer,recently hinted that rivals should expect more Amazon shops in the months and years ahead You will see more expansion from us-it's still early,so those plans will develop over time,he said in october
Amazon will have a huge advantage if
A.more Go stores can be replaced by the Whole Foods
B.the lining-up technology can be applied to more stores
C.customers can get fast lining up service in stores
D.customers can shop faster when purchasing in stores
[多选题]一级动火在首次动火时，各级审批人和动火工作票签发人均应到现场（），确无问题后方可动火。
A.检查防火安全措施是否正确完备
B.监护下做明火试验
C.测定可燃气体燃蒸汽含量是否合格
D.测定易燃液体的可燃蒸汽含量是否合格
[多选题]关闭的环形防喷器胶心打不开的主要原因有( )。
A.胶芯下面有凝固水泥;
B.橡胶老化;
C.胶芯产生了永久变形;
D.关闭油压过低。
[多选题]利用井底动力钻具带动钻头旋转的钻井方法,包括( )钻井。[1分]
A.螺杆钻具
B.电动钻具
C.涡轮钻具
D.顶部驱动
[多选题]根据《变电安规》，下列（ ）情况下应加挂机械锁。
A.未装防误操作闭锁装置或闭锁装置失灵的刀闸手柄、阀厅大门和网门
B.当电气设备处于冷备用时，网门闭锁失去作用时的有电间隔网门
C.设备检修时，回路中的各来电侧刀闸操作手柄和电动操作刀闸机构箱的箱门
D.检修电源箱门
[填空题]根据专座颜色不同,专座标志分别由黄色、（ ）和红色组成。
[单项选择]化脓性关节炎的早期表现中，下列哪项是错误的
A. 关节处疼痛，轻微活动即引起剧痛
B. 畏寒、高热、全身不适等中毒症状
C. 关节肿胀及关节腔内积液
D. 患病关节常呈半屈状态
E. X线片可见关节间隙变窄，骨面毛糙
[单项选择]乙型肝炎的主要传播途径（）
A. 飞沫传播
B. 唾液传播
C. 垂直传播
D. 粪口途径传播
E. 经注射、输血或血制品传播
[多选题]无人机自主巡检作业的全过程步骤顺序包括:数据准备、(____)、飞行准备、巡视飞行、数据整理。
A. 点云精度校验
B. 航线设计
C. 航线审核
D. 作业计划下载
[单选题]美国雷达生命探测仪雷达有一个1G储存卡可能储存超过（）小时的数据
A.40
B.50
C.60
D.70
[多选题]下列设备中,( )需要UPS供电。
A.联锁主机
B.监控子系统打印机
C.控制台分机
D.输入分机
[多选题]要把人民群众( )和( )放在第一位,制定周密方案,组织各方力量开展防控,采取切实有效措施,坚决遏制疫情蔓延势头
A.生命安全
B.财产安全
C.身体健康
D.食品安全
[判断题]检修联络用的断路器（开关）、隔离开关（刀闸），应在其来电侧验电。
A.正确
B.错误
[单选题]下列不属于领导者的三项基本职能的是( )。
A.观念技能
B.人事技能
C.管理技能
D.技术技能
[单选题]电力电缆试验要拆除接地线时，应征得工作许可人的许可（根据调度员命令装设的接地线，应征得调度员的许可），方可进行。工作完毕后（ ）。
A.稍后恢复
B.立即恢复
C.许可后恢复
D.不需恢复
[判断题]开工前，工作负责人或工作票签发人应重新核对现场勘察情况，发现与原勘察情况有变化时，应重新填写、签发工作票。
A.正确
B.错误
[判断题]各营销单位要配合财务部门自觉接受价格检查部门的监督和检查；严肃电价纪律，对违规电价行为，要坚决予以纠正；对属于地方有关部门越权或违规的价格行为，要及时向集团公司反映。
A.正确
B.错误
[单项选择]项目监理机构对工程变更的管理中规定，( )对原设计缺陷提出的工程变更应编制设计变更文件。
A. 建设单位
B. 设计单位
C. 专业监理工程师
D. 总监理工程师
[单选题]【A1型题】栝蒌瞿麦丸主治的是
A. 肺胃热盛的消渴
B. 肾气亏虚的消渴
C. 湿热夹瘀的小便不利
D. 脾肾亏虚的小便不利
E. 上燥下寒的小便不利
[单选题]在一经操作即可送压到工作地点或使工作地点建压的各隔离点的所有阀（闸）门的操作把手、控制按钮、泵启停控制按钮上，悬挂“（ ）”的禁止标志牌。
A.禁止操作 有人工作
B.禁止合闸 线路有人工作
C.禁止合闸 有人工作
D.禁止攀登
[判断题]一般存款账户是存款人因借款或其他结算需要，在基本存款账户开户银行开立的银行结算账户。
A.正确
B.错误
[单项选择]婴儿对外部世界的一点一滴已经在头脑中建立起了某种"模型"，形成了对外部世界的某种看法。如果这种模型与外部世界相符合，他们就感到满意；若是不符合，即所期望的结果没有出现，他们就感到不满意。根据这段话的意思，假如一个婴儿对着他所熟悉的面孔微笑，则说明 ( )
A. 他期望巩固头脑中的某种"模型"
B. 这张面孔看上去很亲切
C. 他喜欢这个人
D. 这张面孔与他脑中的某种期望相符合
[判断题]新时期铁路精神是“安全优质、兴路强国”。
A.正确
B.错误
