热门试题:
[单选题]贯彻总体国家安全观,坚持中国特色国家安全道路,坚持政治安全、人民安全( )有机统一。
A.安全发展
B.社会安全
C.国家利益至上
D.国土安全
[单选题]空调系统配平空气活门把()加到来自混合装置的空气中完成温度的调节
A.组件冷却后的空气
B.组件上游抽出的热空气
C.回收的客舱空气
D.经由空调组件初级热交换器的空气
[单项选择]普查宫颈癌时最有实用价值的检查方法是()。
A. 阴道镜检查
B. 妇科三合诊检查
C. 宫颈碘试验
D. 宫颈刮片细胞学检查
E. 宫颈活组织检查
[填空题]接入网的接入方式包括[填空1]、光纤同轴电缆混合接入、[填空2]和无线接入。
[单项选择]780A系统分前后两个背靠背的机框,共有()个业务盘槽位?
A. 8
B. 48
C. 18
D. 28
[单选题]为了加速拆除设备、设施可采用()方式进行拆除。
A.人工拆除
B.人工与机械相结合的方法
C.切割或机械拆除
[单选题]组织活动的复杂性、管理失误的不可避免性、( )都是控制的必要性。
A.管理人员的流动性
B.管理目标的多变性
C.组织结构的不稳定性
D.组织环境的不确定性
[判断题]全电路中的电流与电源的电动势成正比,与整个电路(即内电路和外电路)的总电阻成反比。(易)( )
A.正确
B.错误
[单项选择]某厂安装两台600MW机组。#1机组于2007年3月15日12:37因计划降低出力300MW,持续20小时;#2机组于2007年9月10日1:15因非计划降低出力240MW,持续40小时,其余时间全出力运行。该厂等效降低出力时间是()小时。
A. 20
B. 60
C. 13
D. 40
[单项选择]在产业资本循环的各个阶段中,所谓的"惊险的跳跃"是指()。
A. 购买阶段
B. 生产阶段
C. 售卖阶段
D. 消费阶段
[单选题]妊娠期子宫的变化,正确的为
A.妊娠足月子宫壁厚度为 0.5~1cm
B.子宫下段临产时可伸展至 5~7cm
C.肌细胞于早期增生,数目增多
D.妊娠足月子宫容量约 5000ml
E.子宫下段孕后期增长速度最快
[单选题]患者男性,52岁,有消化性溃疡病史 10余年,有多次出血史。本次出血后出
现神志恍惚、四肢厥冷,无尿。查体:血压 80/60mmHg,心率 120次/分,脉搏细
弱。提示出血量为
A. 300~600ml
B. 600~800ml
C. 800~1000ml
D. 1000~1500ml
E.
>1500ml
[多选题]肉芽组织的成分包括( )。
A.血管内皮细胞
B.成纤维细胞
C.平滑肌细胞
D.炎症细胞
[多选题]水位计应有( )安全水位的明显标志
A.最高
B.最低
C.最左
D.最右
[多选题]长钢公司开展“双基双评”活动中“双基”指()。
A.岗位基础知识
B.基础理论知识
C.任职基本技能
D.基本操作技能
[多项选择]在公司发行境内上市外资股时,主承销商和国际协调人共同负责的事务包括()。
A. 向拟上市的证券交易所推荐
B. 提供咨询和协调联络
C. 评估发行人的信誉
D. 制作文件
[单选题]
消防救援人员()人以上共同违法违纪,根据各自在违法违纪行为中所起的作用和应当承担的法纪责任,分别给予处分。
A.一
B.二
C.三
D.四
[判断题]在GB 6441—86《企业职工伤亡事故分类标准》中,火灾属于其中一种事故类别。( )
A.正确
B.错误
[不定项选择题]共用题干
Fermi Problem
On a Monday morning in July,the world's first atom bomb exploded in New Mexico desert. Forty seconds later,the shock waves reached the base camp where the Italian-American physicist Enrico Fermi and his team stood.After a mental calculation,Fermi announced to his team that the bomb's energy had equated 10,000 tons of TNT. The bomb team was impressed,but not sur-prised.Fermi's genius was known throughout the scientific world.In 1938 he had won a Nobel Prize.Four years later he produced the first nuclear chain reaction,leading us into the nuclear age .Since Fermi's death in 1954,no physicist has been at once a master experimentalist(实验室)and a leading theoretician(理论学家).
Like all virtuosos(大师),Fermi had a distinctive style. He preferred the most direct route to an answer. He was very good at dividing difficult problems into small,manageable bits talent we all can use in our daily lives.
To develop this talent in his students,Fermi would suggest a type of question now known as a Fermi problem.Upon first hearing one of these,you haven't the remotest notion of the answer, and you feel certain that too little information had been given to solve it. Yet when the problem is broken into sub-problems,each answerable without the help of experts or books,you can come close to the exact solution.
Suppose you want to determine earth's circumference without looking it up.Everyone knows that New York and Los Angeles are about 3,000 miles apart and that the time difference between them is three hours.Three hours is one-eighth of a day,and a day is the time it takes the planet to complete one rotation(旋转),so its circumference must be eight times 3 ,000 or 24,000 mi-les .This answer differs from the true value,24,902 .45 miles,by less than four percent.
Ultimately the value of dealing with everyday problems the way Fermi did lies in the rewards of making independent discoveries and inventions.It doesn't matter whether the discovery is as important as determining the power of an atom or as small as measuring the distance between New York and Los Angeles.Looking up the answer,or letting someone else find it,deprives you of the pleasure and pride that accompany creativity,and deprives you of an experience that builds up self-confidence.Thus,approaching personal dilemmas as Fermi problems can become a habit that enriches your life.
Fermi's team was impressed by Fermi's announcement in the base camp because he could even work out the power of the atom bomb in his mind.
A.Right
B.Wrong
C.Not mentioned
[判断题]“一国两制”构想的提出,先是从解决台湾问题开始的。( )
A.正确
B.错误
[单项选择]肱骨干中、下1/3段交界处骨折,最常损伤的神经是()
A. 下臂丛神经损伤
B. 尺神经
C. 桡神经
D. 肌皮神经
E. 全臂丛神经
[单选题]CRH2A统型动车组需要施加停放制动进行制动试验时:制动手柄置“快速”位,先右旋【停放制动】旋钮置于“施加”位,再将转换开关盘1内的【停放缓解紧急】旋钮右旋至投入(红点)位,进行紧急复位。
A.对
B.错
[单选题]被决定回避的公安机关负责人.侦查人员.鉴定人.记录人和翻译人员,在回避决定作出以前所进行的诉讼活动是否有效,由( )根据案件情况决定
A.县级以上公安机关法制部门
B.县级以上公安机关负责人
C.同级人民检察院检察委员会
D.作出决定的机关
[单项选择]我国从战略上调整国有经济布局,要着眼于( )。
A. 提高国有资产的整体质量
B. 增大国有经济比重
C. 建立新的工业基地
D. 搞好全部国有企业
[简答题]在冲压板料的生产过程中,有哪些因素会影响到冲压性能?
[多项选择]黏性土不加支撑的基坑最大垂直挖深可根据()及安全系数进行计算。
A. 坑壁的重量
B. 内摩擦角
C. 坑顶部均布荷载
D. 黏性土质
E. 坑边沿强度
[判断题]防坠安全器是气动和手动控制的防止吊笼或对重坠落的非机械式安全保护装置( )
A.正确
B.错误
[单选题]一般来说,气温的日变化()露点的日变化。A、大于
A.小于
B.等于
C.说不定
[单选题]公共财政的核心是( )。
A.实现收支平衡
B.满足社会公共需要
C.扩大财政收支规模
D.消除债务风险
[判断题]依据《中国南方电网有限责任公司信息安全等级保护管理办法》(Q/CSG218016-2014),自行建设的系统和网、省公司统一建设及推广的系统,均由网、省公司专业管理部门确定系统的安全等级。
A.正确
B.错误
[单选题]车钩的闭锁位:机车车辆连挂后的车钩位置;两车钩全是闭锁位时才能()。(1.0分)
A.传递牵制力
B.传递牵引力
C.传递牵扯力
D.传递牵动力
[单选题]【单选】爬升和巡航程序:
PM:报“10,000”;
PF:指令“关灯”;
请问PM需要关什么灯?
A.固定着陆灯和滑行灯
B.固定着陆灯和跑道脱离灯
C.收放式着陆灯和滑行灯
D.收放式着陆灯和跑道脱离灯