热门试题:
[单项选择]石油是一个多组分复杂混合物,其化学成分比较复杂,最主要化学元素是()。
A. C
B. H
C. O
D. N
[单项选择]Have we ever had judicious criteria on who are heroes and who are fools in science Have we ever had people believe in those seemingly self-evident judgments In the (31) model of scientific " progress ", we begin in superstitious ignorance and move toward final truth by the (32) accumulation of facts. In this complacent perspective, the history of science contains (33) than anecdotal interest—for it can only chronicle past errors and (34) the bricklayers for discerning (35) of final truth. It is as transparent as an old-fashioned drama: truth ( as we perceive it today) is the only arbiter and the world of (36) scientists is divided into good guys who are right and bad guys who are wrong.
Historians of science have utterly (37) this model during the past decade. Science is not a heartless pursuit of (38) information.
It is a creative human (39) , and its geniuses acting more as artists than as inform
A. influencing
B. influenced
C. having influenced
D. are influenced
[判断题] 带电作业应在良好天气下进行。如遇雷电(听见雷声、看见闪电)、雪、雹、雨、雾等,禁止进行带电作业。( )
A.正确
B.错误
[判断题]制动管的定压不同,其制动管最大有效减压量也相同。
A.正确
B.错误
[判断题]由于被惰性气体隔离,焊接区的熔化金属不会受到空气的有害作用,所以钨极氩弧焊可用以焊接易氧化的有色金属如铝、镁及其合金。
[多选题]抢救被埋、被堵人员时,首先用( )等方法判断遇险人员位置.
A.掘小巷
B.呼喊、敲击
C.临时文护
D.生命探测仪器
[判断题]三相笼型异步电动机减压启动可采用定子绕组串电阻减压启动、星形三角形减压启动、自耦变压器减压启动、延边星形减压启动等方法。( )
A.正确
B.错误
[判断题]从事高处作业不需要设立和明确现场监护人员
A.正确
B.错误
[简答题]举例说明蚊虫的栖息习性会受到季节性和地区型差异?
[判断题] 在刀具材料中,韧性是高速钢最高,立方氮化硼最低。
A.正确
B.错误
[单项选择]Man of Few Words
Everyone chases success, but not all of US want to be famous.
South African writer John Maxwell Coetzee is (1) for keeping himself to himself.
When the 63-year-old was named the 2003 Nobel Prize winner for literature earlier this month, reporters were warned that they would find him "particularly difficult to (2) .
Coetzee lives in Australia but spends part of the year teaching at the University of Chicago. He seemed (3) by the news he won the USS 1.3 million prize. "It came as a complete surprise. I wasn’t even aware they were due to make the announcement," he said.
His (4) of privacy led to doubts as to whether Coetzee will attend the prize, giving in Stockholm, Sweden, on December 10.
But despite being described as (5) to track down, the critics agree that his writing is easy to get to know.
Born .in Cape Town, South Africa, to all English-speaking family, Coetzee (6) his
A. received
B. obtained
C. won
D. had
[单选题]金融机构确认误收或者误付假币的,应当在( )个工作日内向当地中国人民银行分支机构报告,并在上述期限内将假币实物解缴至当地中国人民银行分支机构。
A.2
B.3
C.1
[判断题]有限空间场所管理单位或者作业单位应对救援人员进行培训和训练,使其掌握事故处置程序和方法。
A.正确
B.错误
[多项选择]男性,66岁,尿频、尿急4年余、一直以前列腺增生服药治疗,近半年来间断出现肉眼血尿前来就诊、哪几项检查是不必要的?()
A. B超检查
B. 尿流率检查
C. 直肠指诊
D. 放射性核素肾扫描
E. 尿脱落细胞学检查
[单选题]地理环境在社会发展中的作用主要通过 ( )
A. 对人的心理素质的影响才能实现
B. 对人的生理结构的影响才能实现
C. 对生产过程的影响才能实现
D. 对民族气质的影响才能实现
[单项选择]女,14岁,左下前牙的牙唇侧牙间乳头呈球状突起,松软光亮,局部牙石菌斑少,探诊未及附着丧失最可能的诊断为()
A. 青少年牙周炎
B. 妊娠期龈炎
C. 药物性牙龈增生
D. 青春期龈炎
E. 牙间乳头炎
[判断题]2.129.第129题大接地电流系统中,线路上两相接地短路故障时,非故障相电流仍然是负荷电流。无故障电流分量。
A.正确
B.错误
[简答题]一张工作票中,工作票签发人和(Q)不得兼任工作负责人。
[单选题]35KV及以上铁路电力线路的电杆內缘至铁路线路中心的水平距离不小于杆高加()mm。
A.2440
B.3100
C.3500
[单选题]医学道德的特点是
A.协调性、规范性、继承性
B.实践性、阶级性、社会性
C.阶级性、全人类性、协调性
D.实践性、继承性、全人类性
E.稳定性、规范性、社会性
[判断题](类别:号段管理难度:中等)承包商是软件外包部分的第一责任人,故质量保证活动应由承包商独立完成。()
A.正确
B.错误
[判断题] 开采煤层群时,当全部煤层都是冲击地压煤层时,应尽可能首先开采危险性最大或厚度最大的煤层。 ( )
A.正确
B.错误
[判断题]可燃气体与助燃气体在燃烧之前混合,并形成可燃混合气体,被引火源点燃所引起燃烧现象,称为预混燃烧。( )
A.正确
B.错误
[多选题]在验电操作过程中,正确的行为是( )。
A.对已停电的线路设备,当其经常接入的电压表或其他信号指示无电,可以作为无电压的根据,不必时行验电
B.验电时,必须使用电压等级合适且合格的验电器
C.验电时,应在检修设备的进线和出线两侧分别验电
D.验电前应先在电压等级合适的有电设备上进行试验,以确认验电器良好
[单选题]取血时,应与血库人员做好三查八对,其中三查是什么()
A.血型、血袋号、,血的种类
B.血的有效期、血的质量、输血装置是否完好
C.血的质量、血的种类、血的剂量
D.血型,血的质量、输血装置是否完好
E.血的种类、采血日期、血的有效期
[单项选择]无论广告观念怎样演变,一个不可更改的事实是广告是()的一个组成部分。
A. 包装
B. 品牌效应
C. 营销
D. 形象宣传
[多项选择]截至2015年1月7日,中国已与其他国家和地区缔结()项引渡条约和()项刑事司法协助条约。
A. 39
B. 42
C. 49
D. 52
[单选题]在下列哪种情况下.可使心输出量增加
A.心迷走神经兴奋时
B.动脉血压升高时
C.由直立转为平卧时
D.颈动脉窦区血压升高时
E.心室舒张末期容积减小时
[填空题]水准面有无数个,其中与平均海水面相吻合的水准面称为()。
[判断题]佛山与广州地缘相连,历史相承,文化同源,共同构建“广佛都市圈”。
[多项选择]在资本主义制度下社会生产率的提高会导致( )。
A. 生产资料价值下降
B. 劳动力的价值提高
C. 必要劳动时间缩短
D. 剩余劳动时间延长
E. 产生相对剩余价值
[判断题]按照一定的原则和方法,将有保存价值的文件分门别类整理成案卷,称为组卷。( )P3
A.正确
B.错误
[判断题]突发事件发生地的公民应当服从人民政府.居民委员会.村民委员会或者所属单位的指挥和安排,配合人民政府采取的应急处置措施,积极参加应急救援工作,协助维护社会秩序。( )
A.正确
B.错误
[单项选择]In many countries, shops near telephone boxes are always being asked for change, and usually do not want to give it. If you need change, and cannot find anybody for help, it is a good idea to buy a small thing, such as a pencil, and ask for your change.
Shops near telephone boxes are glad to give change.
[A] True
[B] False
[单项选择]当净化器海水供给量()时,IGS将被联锁。
A. 55m3/h
B. 低于55m3/h
C. 40m3/h
D. 低于40m3/h