热门试题:
[单选题]策划一款权益产品前，往往需要调研友商的类似产品及运营思路，此种方式属于（）？
A.数据分析
B.竞品分析
C.定量分析
D.联合营销
[单选题]有雷雨活动时，管制员应当采取相应措施，下列说法不正确的是( )。
A. 根据天气预报、实况和雷达观测等资料，掌握雷雨的性质、范围、发展趋势等
B. 发现雷雨时，立即指挥航空器绕飞雷雨
C. 将航空器驾驶员报告的雷雨情报，及时通报有关的其他航空器
D. 使用雷达掌握航空器位置；了解着陆机场、备降机场和航路天气情报
[单选题]以下哪种视觉理沦可以用于解释红绿色盲( )
A.三色说
B.四色说
C.遗传理论
D.视觉后像
[单项选择]行星齿轮组的太阳轮与行星架锁在一起时，产生（）
A. 大减速
B. 小减速
C. 直接传动
D. 空档
[单选题]粉状或颗粒状材料在某堆积体积内，颗粒之间的空隙体积所占的比例称为（ ）（2021版教材39页）
A. 空隙率
B. 填充率
C. 密实度
D. 孔隙率
[单项选择]患者，男性，21岁，主诉无明显诱因出现右大腿下端内侧疼痛，开始呈间歇隐痛，逐渐转为持续性剧痛，夜间疼痛加重，影响睡眠，局部肿胀，迅速发展成肿块，表面皮肤温度高，静脉怒张，可出现震颤和血管杂音，X线检查显示股骨干骺端骨质呈浸润性破坏，边界不清，可见Codman三角，呈"日光放射"现象，周围有软组织块阴影。临床上诊断最有可能是（）
A. 骨巨细胞瘤
B. 骨肉瘤
C. 骨软骨瘤
D. 尤文氏瘤
E. 骨母细胞瘤
[单选题]解放南路站到天泰路站( )元。
A.A、2
B.B、3
C.C、4
D.D、5
[单选题]设置( )职业资格,其所涉职业(工种)应具有较强的专业性和社会通用性,技术技能要求较高,行业管理和人才队伍建设确实需要。
A.准入类
B.水平评价类
C.专业技术人员
D.技能人员
[单选题]作业中需移动车辆时,司机应听从( )指挥,确认各作业机构和作业人员处于安全位置。
A.车组长
B.施工负责人
C.驻站联络员
D.添乘领导
[不定项选择题]共用题干
Easy Learning
Students should be jealous.Not only do babies get to doze their days away,but they've also
mastered the fine art of learning in their sleep.
By the time babies are a year old they can recognize a lot of sounds and even simple words. Marie Cheour at the university of Turku in Finland suspected that they might progress this fast be-cause they learn language while they sleep as well as when they are awake.
To test the theory,Cheour and their colleagues studied 45 newborn babies in the first days of their lives.They exposed all the infants to an hour of Finnish vowel sounds一one that sounds like "oo",another like"ee"and a third boundary vowel peculiar to Finnish and similar languages that sounds like something in between.EEG recording of the infants brains before and after the session showed that the newborns could not distinguish the sounds.
Fifteen of the babies then went back with their mothers,while the rest were split into two sleepstudy groups.One group was exposed throughout their night-time sleeping hours to the same three vowels,while the others listened to the other,easier-to-distinguish vowel sounds.
When tested in the morning,and again in the evening,the babies who'd heard the tricky boundary vowels all night showed brainwave activity indicating that they could now recognize this sound.They could identify the sound even when its pitch was changed,while none of the other babies could pick up the boundary vowel at all.
Cheour doesn't know how babies accomplish this night-time learning,but she suspects that the special ability might indicate that unlike adults,babies don't"turn off" their cerebral cortex while they sleep.The skill probably fades in the course of the first years of life,she add一so forget the idea that you can pick up the tricky French vowels as an adult just by slipping a language tape under your pillow. But while it may not help grown-ups,Cheour is hoping to use the sleeping hours to give remedial help to babies who are genetically at risk of language disorders.
An infant can recognize a lot of vowels by the time he or she is a year old.
A.Right
B.Wrong
C.Not mentioned
[单项选择]下列哪项不属于申请建设工程规划许可证的市政交通工程？（）
A. 新建、改建城市道路
B. 人行天桥和地道工程
C. 地铁工程
D. 施工期间设置的便道
[单选题]2.351.第351题
在故障情况下，变压器过负荷二倍时，允许运行的时间为()。
A.15min
B.7.5min
C.3.5min
D.2min
[单选题]教师义务的实质是教师的职责（ ）
A.在行为上的表现
B.在意志上的体现
C.在信念上的体现
D.在意识上的体现
[简答题]02-22 06:12:34.242 17609 17609 I
[单项选择]胎儿十二指肠闭锁的特征性超声图像是（）
A. 单泡状
B. 双泡征
C. 双叶征
D. 双管征
E. 双环征
[单选题]在进行隧道的检查、补漏、铺砌、油刷标志、刨冰及隧道口的粉刷装饰等作业，使用高梯、搭设脚手架、工具等与接触网间距不足2m时，必须在接触网( )后作业。
A.通电
B.检修
C.停电
D.接地
[单选题]在原工作票的停电范围内增加工作任务时，应由工作负责人征得工作票签发人和工作许可人同意，并在工作票上增填(_ _ _)。
A.安全措施
B.工作地点
C.工作项目
[单选题]维持躯体姿势的最基本方式是
A.翻正反射
B.对侧伸肌反射
C.屈肌反射
D.肌紧张反射
E.腱反射
[判断题]由于设备原因，接地刀闸与检修设备之间连有断路器（开关），在接地刀闸和断路器（开关）合上后，应有保证断路器（开关）不会分闸的措施。
A.正确
B.错误
[单选题]电客车车体设计寿命为（）年。
A.15.0
B.20.0
C.25.0
D.30.0
[单选题]眼及眶部CT扫描的适应证不包括
A.屈光不正
B.眼部外伤
C.眼眶内异物
D.眼球及眼眶的肿瘤
E.眼的先天性疾病
[单项选择]以苦冒眩为主症的心下支饮证，仲景以何方主治（）
A. 苓桂术甘汤
B. 泽泻汤
C. 五苓散
D. 真武汤
[单项选择]11．2％的克分子乳酸钠1ml相当于补碱量（）。
A. 3ml
B. 2ml
C. 2.5ml
D. 1.5ml
E. 1ml
[填空题]在CAD中既可以绘制直线，又可以绘制曲线的命令是（）
[单选题]风量是否适当, 可通过观察炉膛火焰和烟气颜色来判断,如火焰白亮刺眼,烟气呈白色,则风量( )。
A. 适当
B. 过大
C. 过小
[判断题] 油罐根据罐顶结构可分为固定顶油罐和非固定顶油罐两类。（ ）
A.正确
B.错误
[多选题]空调冷凝器采用（ ）换热性能好，耐侵蚀，延长冷凝器的使用寿命。
A.铜管
B.铝管
C.铜翅片
D.铝翅片
[单选题]沉井下沉时工人6小时换班一次，沉井的标高、轴线位移至少( )测量一次。
A.1h
B.2h
C.4h
D.6h
[判断题]管道保温的目的是为了减少散热损失，所以才进行管道保温的。
A.正确
B.错误
[多选题]个人防护装备穿戴使用时严格按照说明书或有关规定操作,扣紧贴合所有衣扣、按扣、搭扣,拉严拉索,系紧各种帽带、鞋带、腰带等,保持( )。
A.平整
B.严实
C.舒适
D.牢固
[多选题]配网调控值班人员在上岗前，须经（）、（）取得（），并书面通知有关单位和部门后，方可正式上岗值班。
A.A．培训
B.B．考试
C.C．市公司批准
D.D．合格证书
[单项选择]
Burkina Faso student teacher Hema Cecile has a lot more time to crack the books thanks to a recent initiative from the World Bank and the International Finance Corporation (IFC). The launch of the Lighting Africa program by the two organizations this year has made it possible for Cecile to swap kerosene lamps for a solar-powered LED lantern.
Lighting Africa is a ＄12 million project which intends to bring light to the poorest regions across sub-Saharan Africa. The program works with the lighting industry to develop clean, affordable lighting and energy solutions for millions without access to electric grids. Its aim is to accelerate the market and to develop education programs that inform off-grid populations currently dependent on costly, inefficient and hazardous fuel-based lighting about modern alternatives.
Cecile used to spend ＄3-4 a month on kerosene for her lamp. That is a large proportion of her earnings—like 70 percent of the population she lives on
A. Similar looks with the old kerosene ones
B. Fixed price of $30 for all models
C. Reliable to work when needed
D. Replaceable batteries
[判断题]发现溢流后可不必急着关井.应循环观察。
A.正确
B.错误
