热门试题:
[单选题]在数据表达方法中()是基础。
A.表格法
B.图示法
C.经验公式发
D.回归分析
[判断题]有遮断信号机的道口发生故障时,应立即向列车司机或车站发出警报,并在线路故障地点设置防护信号。
A.正确
B.错误
[单选题]
党员被依法()、逮捕的,党组织应当按照管理权限中止其表决权、选举权和被选举权等党员权利。
A.拘役
B.留置
C.传唤
D.拘留
[判断题]木枕机械磨损,经削平或除去腐朽木质后,其厚度超过10mm属失效。( )
A.正确
B.错误
[多项选择]产品成本项目一般包括( )。
A. 直接材料
B. 直接人
C. 制造费用
D. 管理费用
[判断题]
{{B}}Part A{{/B}}
{{I}} You will hear a talk given by a fire
officer. As you listen, answer Questions 1~10 by circling TRUE or FALSE. You
will hear the talk ONLY ONCE.
You now have 1 minute to read
Questions 1~10.{{/I}}
A pressurized container can be heated up by sunlight in a short time and lead to a fire.
[单选题]引起温室效应的主要物质是( )。
A.氮氧化物
B.二氧化氮
C.二氧化碳
D.二氧化硫
[判断题]CRH1A型动车组是通过调整废排气流和新风气流确保车内为负压的。
A.正确
B.错误
[单选题]配置Na2S2O3标准溶液时,应加入少量的Na2CO3,并煮沸10min,其目的是( )
A.防止Na2S2O3氧化
B.增加Na2S2O3溶解度
C.驱除CO2
D.易于过滤
[单项选择]报表金额是否与总账和明细账的金额相符是会计记录核对的哪种核对()。
A. 账表核对
B. 实存数
C. 总账
D. 日记账的记录
[单选题]四显示自动闭塞区段出站信号机显示一个绿色灯光表示准许列车由车站出发,表示运行前方至少有()个闭塞分区空闲
A.1
B.2
C.3
D.4
[多选题](类别:号段管理难度:中等)2019年6月6日,工信部发放5G商用牌照,我国已正式进入5G商用元年,获得牌照的有()()
A.中国电信
B.中国联通
C.中国移动
D.中国广电
[填空题]影响化学平衡移动的因素有()、()和()。
[单选题]对基建工地、农田水利、市政建设等非永久性用电,可供给( )电源。
A.备用
B.常用
C.临时
D.保安
[多项选择]招标工作里程碑计划的编制步骤包括______。
A. 制定工作目标计划
B. 确定招标采购工作的进度目标
C. 根据阶段目标或子目标制定里程碑
D. 将进度目标分解成阶段目标或子目标
E. 绘制招标采购工作里程碑计划
[判断题]高强度作业时,定时组织战斗人员轮换休息,轮换休息和更换空气呼吸器钢瓶可以在作战区域进行。()
A.正确
B.错误
[单项选择]在其他条件不变的情况下,总体数据的方差越大,估计时所需的样本量()。
A. 越大
B. 越小
C. 可能大也可能小
D. 不变
[判断题]当发现金属材料的配电箱、电表箱箱体带电时,工作人员不应直接接触箱体,应断开电源将其停电,查明带电原因,并作相应处理。
A.正确
B.错误
[判断题]接触网高压电缆本体各部分无机械损伤,无过热变色、变形、开裂、放电现象。( )(《高速铁路接触网运行维修规则》第132条)
A.正确
B.错误
[填空题]现在组建的经济警察,对其年龄作了限制,即经济警察的年龄只能在()之间。
[单项选择]
Some people think they have an answer (36) the problem of automobile crowding and pollution in large cities. Their (37) is the bicycle, or bike. In a great (38) cities, hundreds of people ride bicycles to work every day. In New York city, some bike (39) have even formed a group (40) "Bike for a Better City". They claim(声称)that if (41) people rode bicycles to work, there (42) be (43) automobiles in the downtown section of the city and (44) less dirty air from car (45) .
For several years this (46) has been trying to get the city government to (47) bicycle riders. For (48) ,they want the city to paint special lanes(车道)for bicycles only (49) some of the main streets, because when bicycle riders must use the (50) lanes as cars, there may be (51) . "Bike for a Better City" feels that if there were (52) lanes, (53) people would use bi
A. encourage
B. help
C. notice
D. join
[单选题]承担安全评价、认证、检测、检验的机构应当具备()规定的资质条件,并对其作出的安全评价、认证、检测、检验的结果负责。
A.地方
B.相关行业
C.相关部门
D.国家
[单选题]限速地段滚动推进阶梯提速时,限速地段按阶梯提速和施工作业限速区段设置,阶梯提速区段一般不少于1km。阶梯提速区段和施工作业限速区段的总长度原则不超过()km
A.6
B.7
C.8
D.9
[单选题]有毒、易燃易爆应采用( )安全阀。
A.全封闭式
B.半封闭
C.敞开式
D.不能确定
[判断题]钢筋混凝土杆又分普通型预应力杆和等径预应力杆两种。( )
A.正确
B.错误
[单选题]批复不具有以下哪一特点( )
A.法定的权威性与执行性
B.指导性
C.被动性
D.针对性
[判断题]( )成功需要三个条件不包括智商.
A.正确
B.错误
[多项选择]社区营养教育评价的内容包括______。
A. 是否达到目标
B. 实施营养教育产生的效果
C. 是否按计划执行
D. 分析影响效果的原因
E. 取得成功的经验
[单项选择]男性,20岁,在参加运动会800m赛跑比赛后5分钟,出现呼气性呼吸困难发作。查体:双肺满布哮鸣音,心率108次/分,律齐,无杂音;血压正常,最妥当的处理是()
A. 吸入沙丁胺醇
B. 吸入溴化异丙托品
C. 静脉注射肾上腺素
D. 吸入二丙酸倍氯米松
E. 静脉注射毛花苷C
[单选题]维护社会大局稳定,加强重大创新领域的战略研判和前瞻部署,加快科研力量的投入,要切实维护好国家安全中的( )。( )
A.政治领域安全
B.科技领域安全
C.经济领域安全
[判断题] 道路与铁路平面交叉道口的红灯熄灭时,表示允许车辆和行人通行。( )
A.正确
B.错误
[多选题]力的三要素包括( )。
A.力的大小
B.力的方向
C.力的作用点
D.力的合成
E.力的平衡状态
[判断题]安全防护设施验收时,应按类别逐项检查,不用填写验收记录。
A.正确
B.错误
[单项选择]数控车床对主轴的要求是()。
A. 宽范围转速连续可调
B. 恒功率范围宽
C. 配有编码器
D. 以上都是
[单选题]BAS系统不包括对()系统等的监视。
A.电梯
B.电动蝶阀
C.防淹门
D.防火阀
[单项选择]
Infections ’Speed Memory Loss’
Infections outside the brain may speed memory decline in Alzheimer’ s disease, UK researchers say. The Southampton University researchers studied 222 elderly people with Alzheimer’ s for six months, and they found that getting infections in places like the chest or urinary tract (尿道) could lead to higher level of an inflammatory (引发炎症的) protein called turnout necrosis factor (TNF) in the blood, and double memory loss.
There were 110 of the 222 subjects who developed a total of 150 infections, in areas such as the chest, stomach and intestines (肠) and the urinary tract, which led to the production of TNF proteins. These are collectively known as acute systemic inflammation events (SIEs).
Subjects with one or more SIEs during the six months follow - up had two times the rate of cognitive decline from their baseline score at the start of the study compared with those who had no SIE. And those patients
A. Because it provides more information about Alzheimer’ s disease.
B. Because it tells elderly people how to prevent infections.
C. Because it proves that there is a link between inflammatory processes and Alzheimer’s disease.
D. Because it tells the reason why inflammatory processes is related to Alzheimer’ s diseas