热门试题:
[判断题] 进入电缆井、电缆隧道前,应用气体检测仪检查井内或隧道内的易燃易爆及有毒气体的含量是否超标,并做好记录。
A.正确
B.错误
[判断题]《普速铁路行车组织规则》(NCG/01-2018)规定铁路职工发现危及行车和人身安全的情况时,应立即采取有效安全措施,并保证安全生产。
A.正确
B.错误
[判断题]接车或发车进路色灯信号机兼作调车信号机时,一个月白色灯光——准许越过该信号机调车。
A.正确
B.错误
[判断题]工作场所的照明,应该保证足够的亮度。照明灯具的悬挂高度应不低于2m,并不得任意挪动;低于2m时应设保护罩。
A.正确
B.错误
[单项选择]亚特兰大奥运会上为中国夺得第一枚金牌是什么项目?()
A. 射击
B. 游泳
C. 柔道
D. 举重
[判断题]木材的含水率为30%~100%,新鲜木材的含水率约为40%。
[单选题]下列()属于易燃气体。
A.二氧化碳
B.氮气
C.氧气
D.乙炔
[多选题]必须严格执行“五个绝不允许”要求,即:( )
A.绝不允许不会游泳的指战员在一线参与水域救援任务;
B.绝不允许穿着灭火防护服执行水域救援任务;
C.绝不允许无证驾驶消防舟艇和潜水作业;
D.绝不允许水域情况不明盲目下水救援;
E.绝不允许穿着非水域专用救援服下水救援行动。
[简答题]急救医疗中心各种类型的救护车在数量上应如何配置?
[不定项选择题]共用题干
Dangers Await Babies with Altitude
Women who live in the world's highest communities tend to give birth to under-weight ha-bies,a new study suggests.These babies may grow into adults with a high risk of heart disease and strokes.
Research has hinted that newborns in mountain communities are lighter than average.But it wasn't clear whether this is due to reduced oxygen levels at high altitude or because their mothers are under-nourished—many people who live at high altitudes are relatively poor compared with those living lower down.
To find out more,Dino Giussani and his team at Cambridge University studied the records of
400 births in Bolivia during 1976 and 1998.The babies were born in both rich and poor areas of two cities:La Paz and Santa Cruz. La Paz is the highest city in the world,at 3 .65 kilometers a-bove sea level,while Santa Cruz is much lower,at 0.44 kilometers.
Sure enough,Giussani found that the average birthweight of babies in La Paz was significant-ly lower than in Santa Cruz.This was true in both high and low-income families.Even babies born to poor families in Santa Cruz were heavier on average than babies born to wealthy families in lofty La Paz.“We were very surprised by this result,”says Giussani.
The results suggest that babies born at high altitude are deprived of oxygen before birth.
“This may trigger the release or suppression of hormones that regulate growth of the unborn child,”says Giussani.
His team also found that high-altitude babies tended to have relatively larger heads compared with their bodies. This is probably because a fetus starved of oxygen will send oxygenated blood to the brain in preference to rest of the body.
Giussani wants to find out if such babies have a higher risk of disease in later life.People born in La Paz might be prone to heart trouble in adulthood,for example.Low birth weight is a risk factor for coronary(冠状的)heart disease. And newborns with a high ratio of head size to body weight are often predisposed to high blood pressure and strokes in later life.
It can be inferred from what Giussani says in Paragraph、 4 that______.
A.the finding was unexpected
B.he was very tired
C.the study took longer than expected.
D.he was surprised to find low-income families in La Paz
[单项选择]心理测验尚未形成自己的体系,依附于实验心理学与个别差异的研究而存在的时期是指()
A. 萌芽时期
B. 成熟时期
C. 昌盛时期
D. 完善发展时期
[单项选择]未保价的给据邮件丢失、损毁或者内件短少的,按实际损失赔偿,但最高赔偿额不超过所收取资费的()。
A. 一倍
B. 二倍
C. 三倍
D. 四倍
[单项选择]男性,12岁。1个月前进食不慎,自觉食物呛入气管,此后出现频繁咳嗽,咳黄脓痰。曾发热,胸部平片:未见明显异常()。
A. 水泡音
B. 哮鸣音
C. 胸膜摩擦音
D. Velcro啰音(捻发音)
E. 鼾音
[判断题]费用是企业发生的各项开支以及在正常生产经营活动以外的支出和损失。
[单项选择]患者,男,60岁。梦遗频作,腰膝酸软,咽干口燥,舌红少苔,脉细数。治疗应首选
A. 金匮肾气丸
B. 右归丸
C. 右归饮
D. 左归丸
E. 斑龙丸
[多选题]在为客户办理业务时,按照《中国农业银行个人客户身份识别和尽职调查操作规程》的有关要求开展初次识别或持续识别。
以下哪些情况需要进行初次识别:( )
A.为在我行无个人账户的客户开立单折、借记卡、信用卡和电子账户等
B.为不在我行开立账户的客户提供办理现金汇款、票据兑付等一次性金融服务,且交易金额单笔人民币1万元(含)以上
C.为不在我行开立账户的客户办理个人外币现钞兑换
D.监管机构或我行规定的其他须进行客户身份初次识别的情形
[单选题]排气阀阀面磨损严重时,采用______修复。(264092:第02-02章 柴油机主要部件及检修)
A.研阀
B.更换气阀
C.堆焊
D.堆焊阀座
[单项选择]类IP地址是指()。
A. 每个地址的长度为48位
B. 可以表示1024个网络
C. 每个B类网络最多可以有254个节点
D. 用二进制编址时第一位为1
[单选题]连墙件应靠近主节点设置,这是为了( )
A.便于施工
B.、便于连墙件设置
C.便于立杆接长
D.保证连墙件对脚手架起到约束作用
[多选题]局《铁路旅客运输服务质量规范》中要求( ),客运、车辆、公安等人员按照职责分工分别对列车上部设备设施进行检查,发现问题各自填入“三乘检查记录”并通知车辆人员处置,涉及行车、人身安全的及时采取临时处置措施。
A.列车始发前
B.途中
C.折返站(停留不足3小时)
D.折返站(停留超过3小时)
[填空题]蒸汽吞吐开采过程包括注汽、()和开井生产三个阶段。
[单选题]三扫浮选机泡沫中含量最多的矿物是( )。
A.铁矿物
B.二氧化硅
C.方解石
D.云母
[判断题]督察人员在现场督察中发现公安机关人民警察违反警容风纪规定的,可以当场予以纠正。
A.正确
B.错误
[单项选择]箱形孔型具有()的特点。
A. 轧件尺寸精度高
B. 孔型磨损不均
C. 对轧件夹持力大
D. 氧化铁皮易脱落
[单选题]一般电气设备铭牌上的电压和电流的数值是(____)。
A.瞬时值
B.最大值
C.有效值
D.平均值
[判断题]考核方法通常分为普考和抽考。( )
A.正确
B.错误
[判断题]农村金融机构不得发放无指定用途的农户贷款,但农户可以不按指定用途使用贷款。
A.正确
B.错误
[单选题]甜可可粉多用于( )。
A.原料装饰
B.面包坯料
C.蛋糕坯料
D.表面装饰
[多选题]城市形态的构成要素主要有()
A.地块划分
B.建筑形式
C.土地用途
D.道路网络
E.街道类型
[判断题]对于非因民间纠纷引起的违反治安管理行为,如果双方当事人都有意愿接受调解处理,公安机关可以调解处理。
A.正确
B.错误
[单项选择]肾功能不全病人,可使用正常剂量或略减的药物是
A. 庆大霉素
B. 氨苄西林
C. 多粘菌素
D. 万古霉素
[单项选择]对酚、鞣质等有较大溶解度的是()
A. 乙醇
B. 液状石蜡
C. 二甲基亚砜
D. 聚乙二醇
E. 甘油