热门试题:
[单选题]人民战争的战略战术,就是人民军队与人民群众相(),所进行的革命战争的指导艺术和方法。
A. 结合
B. 领导
C. 协作
D. 协助
[简答题]防落梁装置、作业通道钢栏杆、钢立柱、疏散通道、吊篮、围栏、限高防护架等附属钢结构也可采用手工清理,严禁使用( )物质清理钢表面,
[多选题]电压质量指标包括( )。
A.允许偏差
B.允许波动和闪变
C.三相电压允许不平衡度
D.允许的变化率
E.正弦波形畸变率
[单选题]动车组基础制动装置传动部分分为 和一体式。
A.单元式
B.杠杆式
C.拉杆式
D.叠加式
[单选题]失效安全数主要是用来估计
A.筛选者偏倚
B.文献库的偏倚
C.纳入标准偏倚
D.发表偏倚
E.英语偏倚
[单选题]铁路营业线施工是运输组织的重要组成部分,要坚持( )、施工兼顾的原则。
A.安全
B.畅通
C.作业
D.运输
[多项选择]以下不适合用封堵装置闭合的是()
A. 卵圆孔未闭
B. 单心房
C. 原发孔型房间隔缺损
D. 静脉窦型房间隔缺损
E. 无顶冠状静脉窦
[多项选择]造成儿童心理障碍的主要心理因素包括()。
A. 造成儿童生活剧变的社会事件
B. 生活节律加快
C. 父母对孩子的期望值过高
D. 人格教育欠缺
E. 缺乏母爱及不和谐的家庭氛围
[单选题]( )是第一个由中国参与推动建立并以中国城市命名的地区性合作组织。
A.亚大经合组织
B. 博鳌业洲论坛
C.亚洲基础设施投资银行
D.上海合作组织
[判断题]风险限额确保风险带来的损失不会超过银行的承受能力,为银行管理提供不能逾越的底线。( )
A.正确
B.错误
[单选题]列车员在机车乘务员上车时,应收回( )进行登记并保管。
A.便乘证
B.出差证明
C.铁路乘车证
[单选题]工作指令中对某设备的设备状态标示为“DISCONNECT”,隔离牌为RT,意思是( )。
A.上锁
B.关闭
C.打开
D.断开并上锁
[判断题] 220kV及以上电压等级两套保护的跳闸回路宜与两个智能终端分别一一对应;两个智能终端宜与断路器的两个跳 闸线圈分别一一对应。
A.正确
B.错误
[单项选择]痰火扰神证中,与神昏同见的是()
A. 溲赤便秘
B. 渴喜冷饮
C. 舌红苔黄腻
D. 高热抽搐
E. 脉象细数
[填空题]初级管道工应了解管道结构分布图、( ),简单的工艺图,掌握简单的平面布置图和组件结构图及简单的工艺布置图。
[单项选择]根治原发性肝癌的最好方法是()。
A. 放射治疗
B. 免疫治疗
C. 抗癌药物局部治疗
D. 冷冻治疗
E. 手术治疗
[单选题]采煤工作面发生火灾,在进风侧灭火难以取得效果时,可采取区域反风,从回风侧灭火,但进风侧要设置( ),并将人员撤出。
A.密闭
B.水幕
C.风帐
[单项选择]在医院,评价一项措施的优劣应以为标准()。
A. 治疗成功率
B. 病人痊愈率
C. 病人死亡率
D. 服务成本效果
E. 该医院的经济效益
[单项选择]该社区的总死亡率为
A. 0.43‰
B. 1.98‰
C. 0.50‰
D. 1.03‰
E. 7.69‰
[判断题] 革命的首要问题是分清敌友。
A.正确
B.错误
[单选题] 汽油发动机点火示波器的最大优点是操作简单,测试迅速,并能描绘点火的( )。
A.电容放电过程
B.全过程
C.触点接触过程
D.高压放电过程
[不定项选择题]共用题干
More Than 8 Hours Sleep Too Much of a Good Thing
Although the dangers of too little sleep are widely known,new research suggests that people who sleep too much may also suffer the consequences.
Investigators at the University of California in San Diego found that people who clock up 9 or 10 hours each weeknight appear to have more trouble falling and staying asleep,as well as a number of other sleep problems,than people who sleep 8 hours a night. People who slept only 7 hours each night also said they had more trouble falling asleep and feeling refreshed after a night's sleep than 8-hour sleepers.
These findings,which DL Daniel Kripke reported in the journal Psychosomatic Medicine, demonstrate that people who want to get a good night's rest may not need to set aside more than 8 hours a night. He added that it might be a good idea for people who sleep more than 8 hours each night to consider reducing the amount of time they spend in bed,but cautioned that more research is needed to confirm this.
Previous studies have shown the potential dangers of chronic shortages of sleep,for instance, one report demonstrated that people who habitually sleep less than 7 hours each night have a higher risk of dying within a fixed period than people who sleep more.
For the current report,Kripke reviewed the responses of 1,004 adults to sleep questionnaires,in which participants indicated how much they slept during the week and whether they experienced any sleep problems.Sleep problems included waking in the middle of the night,arising early in the morning and being unable to fall back to sleep,and having fatigue interfere with day-to-day functioning.
Kripke found that people who slept between 9 and 10 hours each night were more likely to report experiencing each sleep problem than people who slept 8 hours.In an interview,Kripke noted that long sleepers may struggle to get rest at night simply because they spend too much time in bed. As evidence,he added that one way to help insomnia is to spend less time in bed."It stands to reason that if a person spends too long a time in bed,then they'll spend a higher percentage of time awake,"he said.
One of the sleep problems is waking in the middle of the night,unable to______.
A.fall asleep again
B.become more energetic the following day
C.sleep less than 7 hours
D.confirm those serious consequences
E.suffer sleep problems
F.sleep more than 8 hours
[单项选择]It was ______ that we felt tired when we arrived.
A. a so long travel
B. such a long travel
C. such a long journey
D. such a so long journey
[单项选择]清洁伤口是指()
A. 清创后的伤口
B. 无任何污物的伤口
C. 有致病菌入侵,但未化脓的伤口
D. 没有致病菌污染的伤口
E. 外伤后6~8小时的伤口
[单选题]《中华人民共和国无线电管理条例》第三条规定,无线电频谱资源属于国家所有。国家对无线电频谱资源实行统一规划、合理开发、()的原则。
A.有偿使用
B.无偿使用
C.随便使用
D.合理使用
[判断题]电压的大小与参考点无关。( )
A.正确
B.错误
[填空题]AGM可通过参数配置设置双向检票机各时间段的使用模式,包括:进站检票机模式、出站检票机模式、( )及紧急模式。
[单选题]50kg/m无缝线路正线维修周期为( )Mt。
A.60-100
B.70-100
C.80-100
D.90-100
[单项选择]SS7C型电力机车的传动方式为()。
A. 交-交流电传动
B. 交-直流电传动
C. 直-直流电传动
[单项选择]物业服务合同规定以外的服务是( )。
A. 无偿服务
B. 义务服务
C. 有偿服务
D. 业内服务
[单项选择]结构化程序设计主要强调的是
A. 程序的规模
B. 程序的效率
C. 程序设计语言的先进性
D. 程序易读性
[单选题]药材甘草的甜味成分是
A.甘草酸的钾、钙盐
B.甘草次酸
C.甘草次酸甲酯
D.甘草苷
E.异甘草苷
[单选题]( )应向中心拟报装载机电子秤的配置及报废建议。
A.操作人员
B.检修人员
C.车间
D.中心
[单项选择]组成牛腿(总)腱的肌肉是()(P23页道倒数第1行)
A. 腓肠肌、趾浅屈肌、臀股二头肌
B. 腓肠肌、趾深屈肌、臀股二头肌
C. 腓肠肌、趾浅屈肌、股四头肌
D. 腓肠肌、趾深屈肌、股四头肌
E. 腓肠肌、趾浅屈肌、趾深屈肌
[单选题]"为了让对方支持他复辟帝制,袁世凯与( )签订严重丧权辱国的""二十一条""。
A. 法国
B. 美国
C. 英国
D. "日本
"
[单项选择]
W: Well, this must be the National Library.
M: I guess so. Oh no! I don’t think it’s open today. Look. It says "Closed Tuesdays" .
W: Well, we’ll just have to come back tomorrow.
M: But we’re supposed to go on that tour tomorrow.
W: Oh. that’s right. I forgot all about it. How about the day after tomorrow then
M: It’s OK with me.
When will they visit the National Library()。
A. On Tuesday.
B. On Wednesday.
C. On Thursday.
D. On the weekend.