热门试题:
[单项选择]我国在完善企业市场监督体制、加强监督管理中强化广大商贸企业的信用意识，通过广泛设置公益广告，通过宣传典型，推出讲信用商贸企业典型，营造浓厚的（）建设氛围。
A. 道德
B. 信用
C. 法律
[单项选择]About six years ago I was eating lunch in a restaurant in New York City when a young boy sat down at the next table．I couldn’t help overhearing parts of their conversation．At one point，the woman asked："So, how have you been"And the boy —who could not have been more than seven or eight years old—replied，"Frankly, I’ve been feeling a little depressed lately．"
This incident stuck in my mind because it confirmed my growing belief that children are changing．As far as I can remember, my friends and I didn’t find out we were"depressed"until we were in high school．
The evidence of a change in children has increased steadily in recent years． Children don’t seem childlike any more．Children speak more like adults, dress more like adults and behave more like adults than they used to．
Whether this is good or bad is difficult to say, but it certainly is different． Childhood as it once was no longer exists．Why
Human development is based not only on innate(天生的)biological states，but
[判断题]办理权限交接、柜员交接的,系统自动锁定交出柜员;交回后,系统自动解除柜员锁定。
A.正确
B.错误
[不定项选择题]原则上不准（ ）及其以上空电客车在同一车站连续通过。
A.两列
B.三列
C.四列
D.五列
[判断题]人有两种以上违反治安管理行为的，分别裁决，合并执行。 ( )
[单项选择]下列哪项是体格生长的总规律（）
A. 正反规律
B. 头尾规律
C. 由简单到复杂
D. 由近到远
E. 各系统器官发育不平衡
[单选题]商业银行若未行使混合资本债券的赎回权，在债券距到期日前最后______年，其可计入附属资本的数量每年累计折扣________。()
A.1；5%
B.2；10%
C.5；20%
D.5；10%
[单项选择]水泵的汽蚀余量是( )。
A. 判断水泵能否发生污染的物理量
B. 判断水泵能否发生汽蚀的物理量
C. 判断水泵的最高被污染量
D. 判断水泵能否使用的参数
[单选题]倒闸操作中发生疑问时，（ ）。待发令人再行许可后，方可继续操作。
A.不得更改操作票，应立即停止操作，并向发令人报告
B.应立即停止操作，并向发令人报告
C.不得更改操作票，应立即停止操作
D.应立即向发令人报告
E.略
[多选题] 下列对安全技术交底主要内容的叙述正确的是( )。
A. 安赖责人的电话
B. 针对危险部位采取的具体防范措施
C. 作业中应注意的安全事项
D. 作业人员应遵守的安全操作规程和规范
[判断题]根据《配电安规》，禁止在只经断路器（开关）断开电源且未接地的高压配电线路或设备上工作。
A.正确
B.错误
[判断题]面板共设有三处指示信息：电源指示灯，控制柜通电时点亮；运行指示灯，风机运转时点亮；手/自动转换开关，通过开关指向指示当前风机处于手动或自动控制状态。（ ）
A.正确
B.错误
[简答题]举例说明水对牧草种类及其营养成分有何影响？
[多选题]动车组辅助供电系统应急用电包括应急照明、应急显示、（ ）等。
A.客室应急通风
B.电茶炉
C.维修用电
D.通信及其控制
[单项选择]按照我国《立法法》的规定，地方性法规、规章中，新的一般规定与旧的特别规定不一致时，由（ ）裁决。
A. 全国人大常委会
B. 国务院
C. 制定机构
D. 国家发展和改革委员会
[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 number of prematurely stopped clinical trials has increased recently.
A.Right
B.Wrong
C.Not mentioned
[多选题]轨道动态不平顺的检查项目为 ( )。
A. 轨距
B. 水平
C. 轨向
D. 高低
[判断题]防超模式和防冒模式的控制方式不一样。
A.正确
B.错误
[单选题]使用洗消帐篷进行洗消时，必须调节好水温；使用水枪进行洗消时，应当防止（）冲击伤人。
A.水压
B.水量
C.水流
D.水速
[单选题]避雷器工频参考电压试验示波器法，运用示波器的（____）功能，调节B通道采样电阻电压，使示波器上波形完全对称，此时可认为避雷器中的容性电流已完全得到补偿。
A. 叠加
B. 移相
C. 迭代
D. 加减
[单选题]血府逐瘀汤主治证是
A.脘腹血瘀证
B.少腹血瘀证
C.膈下血瘀证
D.胸中血瘀证
E.两胁血瘀证
[单选题]绝缘油含气量检测（气相色谱法）中,使用机械振荡脱气法时,将注入氩气的油样在振荡（ ）。
A.10min
B.20min
C.30min
D.40min
[单项选择]如果文本框的SelStart属性值为-1，表示的含义为（ ）。
A. 光标定位在文本框的第一个字符位置上
B. 从当前光标处向前选定一个字符
C. 从当前光标处向后选定一个字符
D. 错误属性值，该属性值不能为负数
[单选题]以下不属于安全教育培训方法的是（ ）。
A.讨论法
B.讲授法
C.读书指导法
[单选题]5.154. 第154题邻近带电导线的工作中，应使用绝缘无极绳索，风力应小于（ ）级，并设人监护。
A.4
B.5
C.6
D.7
[判断题]CRH2A（头型）动车组，锁紧装置：起辅助保护作用，主要由框架和锁紧气缸组成。
A.正确
B.错误
[简答题]若电液调速器的测频信号消失，会出现何后果?应采取何措施?
[填空题]台面行走时，应保持与转载台边缘（）m的安全距离。
[简答题]简述正线继电器ZXJ（用于进站信号机）的作用。
[单项选择]体液酸碱平衡的调节依靠
A. 呼吸系统
B. 肺、肾、血液缓冲系统共同作用
C. 泌尿系统
D. 血液缓冲系统
E. 抗利尿激素和醛固酮
[单选题]垂直速度选择旋钮:
A.未选择V/S方式时与飞机的V/S同步
B.有旋钮行程限制，但与飞机的V/S不同步
C.无旋钮行程限制，且与飞机的V/S不同步
D.如俯仰默认为V/S方式，该按钮会亮
[单选题]当一块4S聚合物电池可能会长时间不使用时,应充放电至电多少,电压多少储存合适?()
A.电量20% ,电压14.8V
B.电量100% ,电压16.8V
C.电量50%左右,电压15.2V~15.6V
[判断题]绕线转子异步电动机在转子电路中串接电阻或频敏变阻器，用以限制起动电流，同时也限制了起动转矩。
A.正确
B.错误
[判断题] 人民警察的回避可以由人民警察本人提出
A.正确
B.错误
[单选题]依照《安全生产法》的规定，生产经营单位发生事故后，必须立即如实报告当地（ ）。
A.公安部门
B.人民政府监察部门
C.企业管理部门
D.负有安全生产监督管理职责的部门
[单选题]SVG图形遵守的语法是（）
A.XML语法
B.VC语法
C.Java语法
D.txt文件
[单选题]针式绝缘子常用于电压较低和导线张力不大的配电线路上。
A.正确
B.错误
[单选题]16V240ZJB型柴油机的球铁活塞顶部的燃烧室（ ）与铝活塞相同。
A.形状
B.空间
C.体积
D.容积
