热门试题:
[多项选择]企业在计算下列固定资产投资决策分析指标时,不需要直接利用资金成本信息的有( )。
A. 现值指数
B. 净现值
C. 投资回收率
D. 投资回收期
E. 内含报酬率
[判断题]为充分了解基层建设情况,领导机关可向基层单位索要文字材料,但要从严控制
A.正确
B.错误
[判断题]会计档案保管期限自会计档案所属年度的1月1日起算。( )
A.正确
B.错误
[多选题](1686595)抽油机井泵效变差的因素包括( )。
A.地质因素
B.地面因素
C.设备因素
D.工作方式
[单选题]教育观察的特点,除了目的性、计划性、观察记录的翔实性以外,还包括( )。
A. 客观性
B. 问题性
C. 主观性
D. 日常性
[不定项选择题]共用题干
第二篇
A Phone That Knows You're Busy
It's a modern problem : you're too busy to be disturbed by incessant(连续不断的)
phone calls so you turn your cellphone off.But if you don't remember to turn it back on
when you're less busy,you could miss some important calls.If only the phone knew when
it was wise to interrupt you,you wouldn't have to turn it off at all.Instead,it could let calls
through when you are not too busy.
A bunch of behavior sensors(传感器)and a clever piece of software could do just
that,by analyzing your behavior to determine if it's a good time to interrupt you.If built into
a phone,the system may decide you're too busy and ask the caller to leave a message or
ring back later.
James Fogarty and Scott Hudson at Camegie Mellon University in Pennsylvania based
their system on tiny microphones,cameras and touch sensors that reveal body language
and activity.First they had to study different behaviors to find out which ones strongly
predict whether your mind is interrupted.
The potential"busyness"signals they focused on included whether the office doors
were left open or closed,the time of day,if other people were with the person in question,
how close they were to each other,and whether or not the computer was in use.
The sensors monitored these and many other factors while four subjects were at work.
At random intervals,the subjects rated how interruptible they were on a scale ranging from
"highly interruptible"to"highly not-interruptible".Their ratings were then correlated with
the various behaviors. " It is a shotgun(随意的)approach: we used all the indicators we
could think of and then let statistics find out which were important,"says Hudson.
The model showed that using the keyboard,and talking on a landline or to someone
else in the office correlated most strongly with how interruptible the subjects judged
themselves to be.
Interestingly,the computer was actually better than people at predicting when someone
was too busy to be interrupted.The computer got it right 82 percent of the time,humans 77
percent.Fogarty speculates that this might be because people doing the interrupting are
inevitably biased towards delivering their message,whereas computers don't care.
The first application for Hudson and Fogarty's system is likely to be in an instant
messaging system,followed by office phones and cellphones. "There is no technological
roadblock(障碍)to it being deployed in a couple of years,"says Hudson.
A big problem facing people today is that
A.they must tolerate phone disturbances or miss important calls.
B.they must turn off their phones to keep their homes quiet.
C.they have to switch from a desktop phone to a cellphone.
D.they are too busy to make phone calls.
[判断题]用电管理中“三电”是指计划用电、节约用电和安全用电。 ( )
A.正确
B.错误
[判断题]《北京局集团公司关于限制铁路旅客运输领域严重失信人购买车票实施细则》规定:站车工作人员遇成人旅客携带不符合乘车条件的儿童,且拒不补票时,应将该成人旅客及儿童旅客共同作为失信人,做好失信行为证据的采集工作。
A.正确
B.错误
[填空题]Since the beginning of human evolution, men have migrated(迁移) across continents in search of food, shelter, safety, and comfortable weather. People still move for these reasons, but new reasons for human migration are arising, such as job relocation (重新安置) and overpopulation.
Three million migrants are moving from poor countries to wealthier ones each year, and increasingly, their destination is a neighboring country in developing parts of the world. People are moving within the developing world for the same reasons as they migrate to wealthier nations. People from poor countries are going to less poor countries, fleeing wars and conflicts. They are also responding to population pressures because some countries are densely populated, and they often have high population growth. Those people need to go somewhere else.
There are three main reasons why people move. The basic categories and percentages are as follows, according to the Current Population Surveys (CPS) :
Family
[不定项选择题]共用题干
Cancer Drug Trials Often Halted Early
An increasing number of clinical trials for new cancer treatments are being halted before the risks and benefits have been fully evaluated,say Italian researchers,who warn that this growing trend could put patients at risk of harm from new therapies rushed into use.
The researchers looked at 25 randomized,controlled clinical trials that were stopped ear-ly because the treatments had started to show benefit to patients.
“When we analyzed 25 trials over a 10-year period between 1997 and 2007,we found a consistent increase in prematurely stopped trials一more than 50 percent were stopped within the last three years,”study co-author Giovanni Apolone said at a news conference Tuesday.
Of 14 trials halted early and published between 2005 and 2007,the researchers found that 11(79 percent)of them were used to support drug approval applications submitted to the European Medicines Agency and the U.S.Food and Drug Administration.
“This suggests a strong commercial component in stopping trials prematurely.In fact, this strategy could guarantee quicker access to the market for companies.On the other hand, a quicker clinical drug development may lead to an ‘immature’benefit/risk balance of new drugs,”Apolone said.
He and his colleagues“are aware that trials stopped early because they are showing ben-efit may result in identification of promising new treatments for patients.However,findings obtained following this strategy should be considered to be preliminary results that require subsequent confirmation.”
It can take several years for the long-term benefits or harmful side effects of a new treat-ment to become apparent, Apolone noted, but the average duration(持续时间)of the 25 studies he and his colleagues analyzed was 30 months,with a range from 12 to 64 months.
They also found that at the time five of the studies were stopped,they'd enrolled less than 40 percent of the total number of patients planned for final analysis.
“Clinical trials need to stop early for superior benefit whenever there's proof beyond rea- sonable doubt that the new treatment really is superior.That would be an ethical obligation,” Stuart Pocock,a professor of medical statistics at the London School of Hygiene and Tropi-cal Medicine in the United Kingdom,said at the news conference.“However,too many trials are stopped early claiming efficacy(功效)without strong evidence being available.”
The trials were stopped early because the treatments proved to be of no value.
A.Right
B.Wrong
C.Not mentioned
[单选题] 机车车辆伤害属于物的不安全状态是( )。
A.站场照明条件不良
B.安全培训教育不到位
C.作业侵限
D.劳动安全防护用品、用具存在缺陷
[单项选择]教学是一种协调的组织活动,具有明确的()、目的性和操作性。
A. 目标性
B. 整体性
C. 计划性
D. 能动性
[判断题]发电机并列有自同期法和准同期法。( )[1.0分]
A.正确
B.错误
[简答题]患者,男,65岁。因“反复咳嗽、咳痰15年,加重伴活动后气喘1周”就诊,1周来出现咳嗽、咳痰加重,伴活动后呼吸困难,休息后可好转,伴腹胀,食欲差,双下肢对称性水肿,晚上明显,早晨可减轻,不能平卧。无发热,无咯血,无昏迷嗜睡,大小便正常。既往有吸烟史40×20年支。
根据上述案例,回答下列问题:
1.请描述该患者可能出现的阳性体征。
2.请写出该患者最可能的诊断。应与那些疾病进行鉴别?
[判断题]《普速铁路技术管理规程》规定,30 kV以下的电线路(包括通信线路、广播电视线路等)不得跨越接触网,应由地下穿过铁路( )(注明出处:《普速铁路技术管理规程》第204条)
A.正确
B.错误
[单项选择]肠结核的好发部位为
A. 十二指肠
B. 空肠
C. 回肠
D. 回盲部
[多选题]电网主接线方式大致可分为()和()两大类。
A.有备用接线
B.无备用接线
C.有避雷线
D.无避雷线
[单选题]真空塔在干燥时,回流罐EDC应去( )。
A.精EDC罐
B.粗EDC罐
C.返回脱水塔
D.去裂解炉
[单选题]扑救锂电池汽车火灾应佩戴空气呼吸器,并根据车辆电压特性穿戴好()等防护装备。
A.绝缘服
B.防静电服
C.绝缘手套
[单项选择]
女,55岁。年轻时性格温和,待人和气,结婚以来夫妻关系一直很好,与亲戚邻里关系也很和睦。这2年快退休时常念叨厂子里的某某在算计她,同车间的某某总与她过不去。后来提前办内退,但不是怀疑邻居在议论她,就是猜疑楼上往自家阳台上扔东西。丈夫劝她几次之后,怀疑其有外遇。从此就限制丈夫必须准时回家,不准其梳洗打扮,一见丈夫收拾自己,就认为要去约会。女儿看不过去说她几句,则认为丈夫将女儿收买,为此伤心欲绝。丈夫将上班之余的所有时间都守着她,持续了1年多,仍消除不了她的疑心,反而加重了她的症状。现在甚至怀疑丈夫要害她,看见他刮胡子,都吓得赶紧躲进卧室还念着;想拿刀子割我动脉,做梦吧,我就不死!丈夫和女儿在同一工厂上班,不允许他们一起上下班。 |
求助者的病程大约有
A. 1年
B. 2年
C. 半年
D. 3个月
E. 1个月 资料没提供,不清楚
[单项选择]为了确定主要构件在变形量为()允许挠度时的压力差而进行的检测为变形检测。
A. 20%
B. 30%
C. 40%
D. 60%
[单选题]在健康问题描述时,为服务对象每次就诊内容进行详细的资料记录,常采用“SOAP”形式对问题进行描述,其中字母“S”的含义是( )
A.主观资料
B.客观资料
C.健康问题评估
D.处理计划
[单选题]“手推磨产生的是封建主为首的社会,蒸汽磨产生的是工业资本家为首的社会。”这句话是说( )
A.生产关系对生产力的反作用
B.生产关系决定生产力
C.生产力决定生产关系
D.生产力同生产关系相适应
[单选题]274、单选题:运营故障需清客,付费区受影响的持单程票乘客要求退票时,按车票余值即时退票或7个日历日内凭票到任一车站办理退票手续,办理( )。
A.地铁原因单程票退款
B.乘客原因单程票退款
C.行政处理其他退款
D.行政处理BOM发售无效票
[不定项选择题]共用题干
Electromagnetic Energy
1 White light seems to be a combination of all colors.The energy that comes from a source of light is
not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy
day it is possible to get a sunburn even though you feel cool.Visible light and the kind of energy that produce
warmth and sunburn are examples of electromagnetic energy.
2 The sun is 93 million miles away from the earth.Yct we can use energy from die sun because elec-
tromagnetic energy travels through space.
3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signais
travel from transmitters to receivers as low-energy electromagnetic waves. Infrared(红外线的)radiation is an
electromagnetic wave.When it is absorbed by matter,heat is produced.Wayes of infrared and visible light
have more energy than waves of radio,television,or radar. Ultraviolet rays(紫外线)and X-rays are eleetro-
magnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating
buildings.Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is
useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel right
through solid objects.They can be used to detect and treat cancer。 X-rays are used in industry to find hidden
cracks in metal,and in medicine to reveal broken bones.
4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the
sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is
trapped behind dams and then used to operate electric generators,Other generators are powered by coal,but
the energy stored in coal came from the sun,too.
5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If
the sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with
electromagnetic radiation led to the theory that mass can be converted into energy.入bout forty years after the
theory was proposed , nuclear energy was harnessed(利用)by man. Chemical energy comes from electron
(电子)rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemi-
cal reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that
the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium(氦).
6 Nuclear energy is beginning to compete with coal as an economical source of power to generate elec-
tricity.It is also being used to operate engines in large ships.Scientists continue to seek new and better
methods of obtaining and using energy.
Paragraph 6__________________
A.Nuclear Reactions as the Lasting Source of the Sun's Energy
B.The Most Imoprtant Source of Energy
C.Types of Eleetromagnetie Energy
D.X-rays Are Used to Detect and Treat Cancer
E.Seeking New Sourees of Energy
F.Nuclear Energy Is Beginning to Compete With Coal
[多选题]运行中的电力电容器,应立即退出运行的异常情况有( )。
A.电容器连接线接点严重过热或熔化
B.电容器内部或放电装置有严重异常响声
C.电容器外壳有较明显异形膨胀时
D.电容器瓷套管脏污
[单选题]营业线路堑地段有可能发生物体坠落,翻落侵入营业线设备安全限界的施工为( )类施工。
A.A
B.B
C.C
D.D
[判断题]工作定额指电动机的额定运行方式,常见的有连续工作方式和断续工作方式(重复短时工作方式)。( )
A.正确
B.错误
[判断题]党员受到警告处分一年内、受到严重警告处分二年内,不得在党内提升职务和向党外组织推荐担任高于其原任职务的党外职务。
A.正确
B.错误
[单项选择]下面程序的结果是( )。
#include<iostream.h>
class A
int a;
public:
A( ):a(1)
void showa( )cout<<a;
;
Class B
int a;
public:
B( ):a(2)
void showa( )cout<<a;
);
class C://public A,public B
int a;
public:
C( ):a(3)
void showa( )cout<<a;
;
void main( )
C c;
c.showa( );
A. 1
B. 2
C. 3
D. 程序有错误
[判断题]会计电算化系统在软件、硬件、人员和手工数据等各项准备工作结束之后即可投入实际运行。( )
[简答题]请复述应急手册如下项点对应内容:
2.1电机变流器模块(以下称MCM)显示红色,并隔离,未报探测到机械故障(故障代码:4X33)。
[填空题]《空调列车服务质量规范》中封闭式洗脸间、厕所防护栏安装牢固,防护栏栏杆之间及栏杆与窗框之间间隙不大于 。
[判断题]“好”竞争者的存在会给公司带来一些战略利益( )
A.正确
B.错误
[多选题]人民法院司法警察执行看管警务时,遇有被告人亲属要求会见、递送食品、钱物和传递口信的,下列做法正确的是( )
A.司法警察应对其进行警告,并及时将物品没收
B.应告知被告人亲属,按照规定不允许会见被告人、递送食品、钱物、传递口信
C.告知被告人亲属可以将有关物品送至看守所或者其他监管机构后转交给被告人
D.对被告人亲属进行驱离
[单项选择]下列不属于顺穿法穿大绳特点的是()。
A. 穿绳法简单
B. 二层台扣吊卡操作比较方便
C. 各滑轮偏磨的可能性较小
D. 各滑轮偏磨性较大
[单选题]某井队在进行电控房吊装就位作业时,起重绳索连接环处突然断裂,经进一步检查发现绳索连接环处存在裂纹现象,所幸的是被吊物电控房未被吊起,没有造成设备和人员伤害。此次事件的直接原因是( )
A. 对吊装绳套检查不及时;
B.安全危害分析不到位;
C.绳索连接环处有内伤,存在裂纹;
D.电控房过重。