热门试题:
[单项选择]项目经理在承担工程项目施工管理过程中，应当按照建筑施工企业与建设单位签订的工程承包合同，与( )签订项目承包合同。
A. 建设单位
B. 施工单位
C. 本企业法定代表人
D. 本企业董事会
[单选题]儿科病房的护士长是一名很有领导艺术的领导者，当护士与患儿相处愉快，得到认可时，护士长都会立即加以表扬，实际上就是对行为做了
A.消退
B.惩罚
C.消极强化
D.负强化
E.正强化
[多选题]光纤损耗的主要原因是什么？（中）（消防通信网络与业务系统管理）
A.吸收
B.散射
C.折射
D.磨损
[判断题]管道密封套主要用于压力16巴的管道裂缝密封。
*
A.正确
B.错误
[单选题]有毒气体探测仪无报警时,每( )s可以听见蜂鸣声并且报警指示灯闪烁,表示仪器运行正常。
A.15
B.30
C.60
D.120
[判断题]( ) 《承包商井控违规责任追究》,凡停工整改的,停工时间不得少于7..天,并在下月油田井控例会上做完检查,方可进行复工验收。
A.正确
B.错误
[单项选择]假设某国某年年末外债余额1600亿美元，当年还本付息总额为200亿美元，当年国民生产总值1万亿美元，当年商品劳务出口总额为2100亿美元。
请根据以上资料回答下列问题：
该国偿债率为( )。
A. 9.5%
B. 32%
C. 16%
D. 76.2%
[多选题]常见的干燥技术包括（ ）。
A.对流干燥
B.接触干燥
C.辐射干燥
D.冷冻干燥
E.喷雾干燥
[单选题]双线反方向出站调车,须有停止基本闭塞法的调度命令,与邻站办理闭塞手续,并发给司机( )后,方可进行。
A.红色许可证
B.调度命令
C.路票
D.出站调车通知书
[单选题] TETRA每载波含几个信道?
A.2
B.3
C.4
[单选题]请阅读短文，完成此题。
Move over Methuselah. Future generations could be living well into their second century andstill doing Sudoku, if life expectancy predictions are true. Increasing by two years every decade,they show no signs of flattening out. Average lifespan worldwide is already double what it was 200years ago. Since the 1980s, experts thought the increase in life expectancy would slow down andthen stop, but forecasters have repeatedly been proved wrong.
The reason behind the steady rise in life expectancy is "the decline in the death rate of theelderly", says Professor Tom Kirkwood from Newcastle University. He maintains that our bodies areevolving to maintain and repair themselves better and our genes are investing in this process to putoff the damage which will eventually lead to death. As a result, there is no ceiling imposed by thereahties of the ageing process."There is no use-by-date when we age. Ageing is not a fixed biological process," Tom says.
A large study of people aged 85 and over carried out by Professor Kirkwood discovered that there were a remarkable number of people enjoying good health and independence in their late 80s and beyond. With people reaching old age in better shape, it is safe to assume that this is all due to better eating habits, living conditions, education and medicine.
There are still many people who suffer from major health problems, but modem medicine means doctors are better at managing long-term health conditions like diabetes, high blood pressure and heart disease."We are reaching old age with less accumulative damage than previous generations. We are less damaged," says Professor Kirkwood. Our softer lives and the improvements in nutrition and healthcare have had a direct impact on longevity.
Nearly one-in-five people currently in the UK will live to see their lOOth birthday, the Office for National Statistics predicted last year. Life expectancy at birth has continued to increase in the UK--from 73.4 years for the period 1991 to 1993 to 77.85 years for 2007 to 2009. A report in Science from 2002 which looked at life expectancy patterns in different countries since 1840 concluded that there was no sign of a natural limit to life.
Researchers Jim Oeppen and Dr. James Vaupel found that people in the country with the highest life expectancy would live to an average age of 100 in about six decades. But they stoppedshort of predicting anything more.
"This is far from eternity: modest annual increments in life expectancy will never lead toimmortality," the researchers said.
We do not seem to be approaching anything like the limits of life expectancy, says Professor David Leon from the London School of Hygiene and Tropical Medicine. "There has been no flattening out of the best of the best--the groups which everyone knows have good life expectancy and low mortalit_y"he says.
These groups, which tend to be in the higher social and economic groups in society, can live for several years longer than people in lower social groups, prompting calls for an end to inequalities within societies.
Within populations, genes also have an important role to play in determining how long we could survive for---but environment is still the most important factor.
It is no surprise that healthy-living societies like Japan have the highest life expectancies in the world. But it would still be incredible to think that life expectancy could go on rising forever. "I would bet there will be further increases in life expectancy and then it will probably begin to slow," says Tom, "but we just donTt know."
Which statement below is TRUE concerning life expectancy according to the passage?
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A.Life expectancy goes on rising forever.
B.There could be further increases in life expectancy.
C.Life expectancy has slowed down since 1980s and it will stop.
D.Life expectancy in Japan doubles what it was 200 years ago.
[单选题]起重吊钩应挂在物件的（）。
A.顶端
B.中部
C.重心线上
D.中心线上
[单选题]对采取人工检查或人机分工检查方式进行列检作业的货物列车中的机械冷藏车组，制动缸活塞制动、缓解作用良好（（ ）列车除外）
A.到达
B.始发
C.中转
D.直通
[单选题]班长、副班长职务晋升,由( )审批。
A.支队政治机关
B.总队政治机关
C.总队政治机关及支队政治机关
D.站(中队)正职领导
[不定项选择题]某妇女40岁，患卵巢肿瘤，3小时前突感左下腹剧痛，伴恶心、呕吐。
最可能的并发症是( )
A.破裂
B.感染
C.蒂扭转
D.恶变
E.坏死
[填空题]无砟道床静态检查<--NRC-->检查1遍。
[单项选择]启动钻井液真空蒸馏脱气器的加热器，如加热不正常，应先（）。
A. 调整加热器各状态
B. 检查
C. 修理
D. 更换
[单选题]城乡居民养老保险个人账户养老金的月计发标准,目前为个人账户全部储存额除以()。
A.139
B.132
C.144
D.120
[判断题]若柴油机喷油时刻过早,会导致发动机工作粗暴。( )
A.正确
B.错误
[单选题]房产原值无法确定的,房产税应( )
A.由房地产评估机构比照同时期的房产评估
B.由房地产评估机构比照同类房产核定
C.由纳税人自行申报
D.由房产所在地税务机关参考同类房产核定
[多选题]下列费用中，属于安全文明施工费用的有（ ）。
A.环境保护费
B.临时设施费
C.劳动保护费
D.总承包服务费
E.已完工程及设备保护费
[单选题]某企业本年度预期经营利润为3000万元，在与某股权投资基金谈判后，双方同意按照该预期利润的15倍市盈率作为融资前估值，由该基金向该企业投资5000万元，投资完成后，该基金所占股份比例为（ ）。
A.11％
B.10％
C.20％
D.15％
[单选题]烟草专卖行政主管部门依法收购违法运输的卷烟的,收购价格按照该卷烟( )的百分之七十计算。
A.市场批发价格
B.市场零售价格
C.上年度平均批发价
D.上年度平均市场零售价
[单选题]万用表由表头、测量电路及（）等三个主要部分组成。
A.表笔
B.电池
C.调整电阻
D.转换开关
[单选题]建筑物倒塌破坏的次序一般是( )
A.从上到下，先吊顶，后屋盖，最后是墙柱
B.从上到下，先屋盖，后吊顶，最后是墙柱
C.从上到下，先墙柱，后屋盖，最后是吊顶
D.从上到下，先吊顶，后是墙柱，最后屋盖
[单项选择]输卵管妊娠特征下列哪项是错误的
A. 输卵管峡部妊娠发生破裂的时间较早
B. 输卵管间质部妊娠破裂时，出血最多，后果最严重
C. 输卵管妊娠中以壶腹部妊娠最多见
D. 妊娠试验常(+)
E. 后穹隆穿刺常可抽得正常可凝血液
[判断题]无缝线路限制长钢轨伸缩的有道床阻力、接头阻力、扣件阻力。
A.正确
B.错误
[单选题]列车运行中，遇列车无线调度通信设备发生故障时，司机应立即使用GSM-R手持终端或列车无线调度对讲设备报告车站值班员（列车调度员），列车（ ）。
A.应立即停车
B.应前方站停车
C.可继续运行
D.应限速运行
[多选题]以下哪些情况，需要对调配缸（完成糖浆缸）做刻度校准？
A.每半年
B.罐体移动到了新位置
C.车间内地面发生了沉降
D.罐上有新凹痕或损坏
[多项选择]出口方银行可以为出口商提供的融资服务种类有（）。
A. 国际保理
B. 打包放款
C. 出口押汇
D. 福费廷
E. 出口票据贴现
[多项选择]2014年2月12日，丙公司向甲公司采购材料，按合同规定向甲公司预付货款400000元。2014年2月28日，丙公司收到甲公司按合同发来的材料，发票显示货款为600000元，增税额为102000元，丙公司当即按合同规定用银行存款补付货款。丙公司对于该项经济业务的会计处理，正确的会计分录有（）。
A. 借：预付账款——甲公司；400000；贷：银行存款；400000
B. 借：原材料；600000；应交税费——应交增值税（进项税额）；102000；贷：预付账款——甲公司；702000
C. 借：原材料；600000；应交税费——应交增值税（进项税额）；102000；贷：预付账款——甲公司；400000；应付账款——甲公司；302000
D. 借：预付账款一甲公司302000；贷：银行存款；302000
[判断题]当发现有人煤气中毒应先救人,后打电话给煤防站和救护中心。
A.正确
B.错误
[单选题]经角膜曲率仪测定,诊为轻中度角膜性散光,适用( )镜片。
A.内环曲面外球面
B.内外双环曲面镜片
C.外环曲面内球面镜片
D.内外双球面镜片
[判断题] 收费的桥梁收费站、公厕设施用电按商业用电计费。
A.正确
B.错误
[判断题]继电保护灵敏性是指继电保护对设计规定要求动作的故障及异常状态能够可靠地动作的能力。( )
A.正确
B.错误
[单选题]变压器所带的负荷是电阻、电感性的,其外特性曲线呈现( )。
A. 上升形曲线;
B. 下降形曲线;
C. 近于一条直线;
D. 无规律变化。
