热门试题:
[判断题]微电网控制模式划分为平级控制模式、不对等控制模式和分层控制模式。
A.正确
B.错误
[单项选择]全身麻醉前给予病人阿托品，其目的是（ ）
A. 减少呼吸道腺体分泌
B. 预防胃肠痉挛
C. 增强麻醉效果
D. 预防心血管并发症
E. 镇静
[单项选择]It was John who broke the window. Why are you talking to me as if I __________ it
A. had done
B. have done
C. did
D. am doing
[单选题]雷暴处于发展阶段时__________。[1分]
A.地面气压持续下降
B.地面气压持续上升
C.地面气压保持不变
[单选题]新建架空电力线路一般不得跨越房屋，特殊情况需要跨越房屋时，电力建设企业应采取安全措施，并与有关单位()。
A.协商
B.商议
C.达成协议
D.口头协议
[单选题] 电灯开关要串接在()上
A.地线
B.相线
C.相线或零线
D.零线
[判断题]宾馆、招待所、医院以及部分工厂用的洗衣机执行非居民照明电价。
A.正确
B.错误
[单选题]电动全静叶可调式轴流鼓风机调节风量、风压不宜使用( )。低难度
A.转速
B.静叶角度
C.吸风门
D.放风门
[多选题]调动装有超限货物车辆时，应注意( )邻近线路建（构）筑物的限界及邻线停留车的情况，按照规定的速度进行作业
A.信号机柱
B.接触网支柱
C.雨棚柱
D.道岔表示器
[单选题]
通常我们所说的滤波器的带宽是指（）。
A. -1dB点的宽度
B. -2dB点的宽度
C. -3dB点的宽度
D. -5dB点的宽度
[单选题]交流电能转换为直流电能叫做( )。
A.斩波
B.整流
C.逆变
D.变频
[单选题]专责监护人的安全责任包含：明确被监护人员和（）。
A.许可工作的命令正确
B.工作必要性
C.监护范围
D.安全注意事项
[多项选择]当企业采用随机模式对现金持有量进行控制时，下列有关表述正确的有（）。
A. 只有现金持有量超出控制上限，才用现金购入有价证券，使现金持有量下降；只有现金持有量低于控制下限时，才抛售有价证券换回现金，使现金持有量上升
B. 计算出来的现金持有量比较保守，往往比运用存货模式的计算结果大
C. 当有价证券日利息率下降时，企业应降低现金持有量的上限
D. 现金余额波动越大的企业，最优现金返回线越高
[单选题]《动车组以外列车的机务行车安全措施》规定：运行中机班二人应做到（ ）、确认信号、准确呼唤、手比眼看，认真执行（ ）和车机联控制度，严格按照（ ）要求行车。
A.加强瞭望、呼唤应答标准、LKJ显示
B.彻底瞭望、呼唤应答标准、信号显示
C.彻底瞭望、标准化作业、信号显示
D.彻底瞭望、呼唤应答标准、调度员
[单项选择]健康教育与健康促进的关系是（）
A. 等同关系
B. 并行关系
C. 包容与被包容关系
D. 先后关系
E. 因果关系
[单项选择]A study by scientists in Finland has found that mobile phone radiation can cause changes in human cells that might affect the brain, the leader of the research team said.
But Darius Leszczynski, who headed the 2-year study and will present findings next week at a conference in Quebec, said more research was needed to determine the seriousness of the changes and their impact on the brain or the body.
The study at Finland’s Radiation and Nuclear Safety Authority found that exposure to radiation from mobile phones can cause increased activity in hundreds of proteins in human cells grown in a laboratory, he said.
"We know that there is some biological response. We can detect it, with our very sensitive approaches, but we do not know whether it can have any physiological effects on the human brain or human body," Leszczynski said.
Nonetheless the study, the initial findings of which were published last month in the scientific journal Differentiation, raises new question
A. The research in Finland found that mobile phone radiation will affect one’s brain.
B. Mobile phone radiation can cause increased activity in hundreds of protein in human cells.
C. Increased protein activity might cause cells to shrink.
D. Lszczynski forbid his wife and children to use mobile phone after his research.
[单选题]锂电池汽车火灾扑救主要存在哪些风险（）
A.触电.中毒.污染
B.触电.中毒.爆炸
C.中毒.爆炸.污染
D.爆炸.窒息.污染
[单选题]之中的状态位为0时说明子种（）。
A.正常运行
B.追赶运行
C.停止运行
D.发生故障
[单项选择]Some politicians are scurrying about with much zest and anticipation. It’s time, their polls inform them, to find the quick fix for what they have determined is a society plagued by the irregular heartbeat of deficient values.
But there are contradictions that intrude on this denunciatory atmosphere. If there are moral omissions in the society, they cannot be sealed by instant, slenderly based attacks on entertainment. The plain fain fact is we are rearranging our priorities in the wrong way.
We are today misplacing our energies and our funding by directing all sorts of incentives to high schools and colleges. Too late. The moral scaffolding has been built by then,for better or worse. How then to begin this revision of life conduct We must introduce inpre-school, and keep alive through grade five, a new school course.
The course could be titled, "What is right, and what is plainly wrong". For 30 minutes each day, the teacher would illuminate for these very young children
A. the past ways for ruling a society
B. the society’s established virtues
C. the out-of-date moral conducts
D. the previous legal systems
[多选题]TYJL-ADX型计算机联锁，从FCX板上的( )指示灯状态可以判断该系启动时有异常。
A.A、RUN灯闪灯
B.B、ERR灯红灯
C. C、STBY灯灭灯
D. D、ERR灯红灯
[多选题]一张工作票中，（）三者不得为同一人。
A.工作票签发人
B.工作许可人
C.工作负责人
D.专责监护人
[判断题]设有股道表示器等设备能确认开通股道的车站，要道还道时，可不显示开通信号，不显示股道号码。
A.正确
B.错误
[不定项选择题][不定项选择题]热水系统回水干路上除污器的作用是( )。
A. 降低循环水的硬度
B. 防止沉渣、污物造成管路堵塞
C. 防止沉渣、污物进入锅炉
D. 减轻沉渣对循环水泵的磨损
[单项选择]下列关于IP提供的服务正确的是( )。
A. IP提供不可靠的数据投递服务，因此它可以随意丢弃报文
B. IP提供可靠的数据投递服务，因此它不能随意丢弃报文
C. IP提供不可靠的数据投递服务，因此数据报投递不能受到保障
D. IP提供可靠的数据投递服务，因此数据报投递可以受到保障
[判断题]枪械在保管时间内，应使击锤处于击发位置，并关上保险。
A.正确
B.错误
[填空题] Most worthwhile careers require some kind of specialized training. Ideally, therefore, the choice of an (B1) should be made even before the choice of a curriculum in high school. Actually, (B2) , most people make several job choices during their working lives, (B3) because of economic and industrial change and partly to improve (B4) positions. The "one perfect job" does not exist. Young people should (B5) enter into a broad flexible training program that will (B6) them for a field of work rather than for a single (B7) .
Unfortunately many young people have to make career plans (B8) benefit of help from a competent vocational counselor or psychologist. Knowing (B9) about the occupational world, or themselves for that matter, they choose their lifework on a hit-or-miss (B10) Some drift from job to job. Others (B11) to work in which they are unhappy and for which they are not flitted.
One common mistake is choosing an occupation for
A. A．Therefore
B．However
C．Moreover
D．Nevertheless
[单选题]党史学习教育的突出任务:学党史、()、办实事、开新局。
A.增信心
B.悟思想
C.明事理
D.心向党
[单选题]下列医患关系中，属于技术关系的是
A.医务人员对患者良好的服务态度
B.医务人员对患者高度的责任心
C.医务人员对患者的同情和尊重
D.医务人员以精湛医术为患者服务
E.患者对医务人员的尊重
[单项选择]知识经济论似乎要取代信息经济论，但两者都同意未来经济的标志为？（）
A. 信息和只是密集型产业占经济总量的比重越来越小
B. 技术工人和知识工人来劳动人口中的比重越来越小
C. 信息和知识成为最重要的生产要素和资源
D. 信息和知识成为流通领域的次要的商品
[多项选择]下列属于注册会计师避免法律诉讼的对策有( )。
A. 建立职业风险基金
B. 审慎选择被审计单位
C. 出具管理建议书
D. 深入了解被审计单位业务
[简答题]职业健康检查包括（上岗前、在岗期间 、 离岗时
）38、用人单位应当为劳动者建立( )，并按照规定的期限妥善保存。
[判断题]向炉水加药是对炉水进行内处理，目的是防止结垢和腐蚀。
[单项选择]水环境对人体功能的影响，表现在完成与陆上相同强度运动时（）。
A. 肺通气量增大，
B. 呼吸当量减少，
C. 吸氧效率下降，
D. 搏出量增加。
