热门试题:
[单选题]积复励发电机的端电压在负载变化时变化( ),多应用于要求电压基本不变的系统中。
A. 较小
B. 较大
C. 不变
D. 不一定
[多选题]行政复议期间,有下列( )情形的,行政复议终止。
A.申请人要求撤回行政复议申请,行政复议机构准予撤回的
B.行政复议申请受理后,发现其他复议机关或者人民法院已经先于本机关受理的
C.作为申请人的公民下落不明或被宣告失踪的
D.申请人、被申请人因不可抗力,不能参加行政复议的
[单选题]厦门地铁1号线电客车客室门标准外摆尺寸为?
A.40-42mm
B.40-43mm
C.40-44mm
D.40-45mm
[单选题]高压电工作业指对()及以上的高压电气设备进行运行 维护 安装 检修 改造 施工 调试 试验及绝缘工 器具进行试验的作业。
A. 1千伏(kV)
B.11千伏(kV)
C. 6千伏(kV)
[单选题]搞好思想政治教育,要深入开展理想信念、性质宗旨、职能使命和( )。
A.文化宣传
B.马克思主义理论
C.光荣传统教育
D.学为打赢
[单选题]血浆半衰期最长钙拮抗药是
A.硝苯地平
B.尼卡地平
C.氨氯地平
D.尼索地平
E.尼群地平
[判断题]轮毂径向跳动≤6mm,端面跳动≤6mm
A.正确
B.错误
[单选题] 从业人员在作业过程中,应当遵守本单位的( ),服从管理,正确佩戴和使用劳动保护用品。
A.安全生产规章制度
B.安全生产规章制度和操作规程
C.操作规程
D.行业标准"
[单选题]呼吸衰竭时缺氧与二氧化碳潴留的最主要发病原理是:
A.通气/血流比例失调
B.弥散性功能障碍
C.肺泡通气量不足
D.氧耗量增加
E.肺内动静脉分流增加
[单项选择]Robert is said ( ) abroad, but I don't know what country he studied in.
A. to have studied
B. to study
C. to be studying
D. to have been studying
[多选题]剖面图中用标高及尺寸线表明()等。
A.建筑总高
B.室内外地坪标高
C.地面的坡度
D.各层标高
[判断题]高倍数泡沫产生器主要适用于扑救一般固体可燃火灾和甲、乙、丙类液体火灾,但不得用于扑救遇水发生化学反应而引起燃烧、爆炸等物质的火灾。()
A.正确
B.错误
[单项选择]建立()是施工安全技术措施实施的重要保证。
A. 项目经理制
B. 持证上岗制
C. 市场准入制
D. 安全生产责任制
[单项选择]美国老报人斯东在《苏格拉底的审判》中说,苏格拉底的死“在民主身上永远留下了一个污点。这乃是雅典的悲剧性罪行。”从公元前490年到公元前322年,雅典约有一半左右的政治家(包括伯里克利)都不同程度地受到民众的惩罚。这些史实表明()
A. 雅典政治腐败,阶级矛盾激化
B. 苏格拉底等人仇视民众,主张实行贵族政治
C. 直接民主导致国家权力的滥用
D. 雅典的民主政治保护了全体雅典人的利益
[单项选择]The concept of personal choice in relation to health behaviors is an important one. An estimated 90 percent of all illness may be (62) if individuals would make sound personal health choices (63) upon current medical knowledge. We all enjoy our freedom of choice and do not like to see it (64) when it is within the legal and moral boundaries of society. The structure of American society allows us to make almost all our personal decisions that may (65) our health. If we (66) desire, we can smoke, drink excessively, refuse to wear seat belts, eat (67) foods we want, and live a (68) sedentary (久坐的) lifestyle without any exercise. The freedom to make such personal decisions is the fundamental (69) of our society, (70) the wisdom of these decisions can be questioned. Personal choices relative to (71) often cause a difficulty. As one example, a teenager may know the facts relative to
A. thus
B. therefore
C. otherwise
D. so
[单选题]从业人员发现直接危及人身安全的紧急情况时,( )停止作业或者在采取可能的应急措施后撤离作业场所。
A.无权
B.有权
C.不得
[多选题]井工煤矿的特点是:作业地点( ),地下开采技术复杂,生产环节多,工作面不断移动,地质条件常有变化。
A.空间狭窄
B.阴暗潮湿
C.高温干燥
D.环境条件恶劣
[多选题]3.32. 第32题
正确使用钳型电流表的方法是( )。
A.测量电流时,应按动手炳使铁心张开,把被测导线(必须是单根)穿到钳口中央
B.先选用较大量程,然后再视读数的大小,逐渐减小量程
C.测量小于5A以下电流时,可把导线多绕几圈放进钳口测量
D.测量完毕把转换开关放在最大电流量程的位置上
[单选题]捕收剂MH-80检测,马弗炉温度降至( )℃左右,可取出试样。
A.0
B.10
C.20
D.50
[判断题]当交流调压屏发生故障时,应能断开调压屏输入电源,由外电网直接供电。
A.正确
B.错误
[判断题]井下发生火灾撤退时,在烟雾大、视线不清楚的情况下,要摸着巷道壁前进,以免错过联通出口
A.正确
B.错误
[单项选择]铅尘的国家卫生标准是
A. 0.05(mg/m3)
B. 0.03(mg/m3)
C. 0.04(mg/m3)
D. 0.02(mg/m3)
E. 0.06(mg/m3)
[多选题]《建设工程安全生产管理条例》规定,施工单位应当向作业人员提供( ),并书面告知危险岗位的操作规程和违章操作的危害。
A.A-安全防护用具
B.B-操作资格证书
C.C-安全防护服装
D.D-安全施工手册
E.掠
F.掠
G.掠
[单选题]双线螺纹旋转一圈,沿其轴向移动的距离称为( )。
A.节距
B.导程
C.节经
D.螺距
[不定项选择题]资料:之后,经济学家Mr.U与你讨论了一些潜在的问题,请根据下列资料回答问题。
KGV is s traditional high-street music retailer.Based in Amsterdam,it has 12 stores in the Netherlands,three of which are mega stores.Some years ago,it expanded into the rest of Europe and now owns 65 stores-eight of these are mega stores.The company is at present going through a difficult period.Over the last three years,profits have steadily fallen,from 450m Euros to 290m Euros.The mega stores’sales have risen by ,accounting for of the company’s turnover, but the increased revenue has been achieved only by heavy expenditure on advertising and promotion. Fierce competition,a narrow product range and a lack of innovation are some of the reasons for KGV’s poor performance.The management are concerned,especially,that they are not exploiting the opportunities offered by selling through the Internet.
What kind company is KGV?( )
A.It is music studio.
B.It is an advertising agency.
C.It is a high-street music retailer.
D.It is a consulting firm.
[多选题]根据《电能表抽样技术规范》,智能电能表,抽检的时间分别是运行的第()、()、()、()年,运行8年之后每年一次。
A.2
B.4
C.6
D.8
[判断题]卸钻头时,在不好打双钳的情况下,可直接打好内钳,转动转盘卸扣
A.正确
B.错误
[单选题]纵横家之鼻祖,被誉为千古奇人,后人称其为“王禅老祖”的是()。
A.鬼谷子
B.卫庄
C.苏秦
D.张仪
[单选题]塌法要将原料加工成( )以便于成熟。
A.片形
B.扁平形
C.圆形
D.方形
[单选题]从事有限空间作业的特种作业人员应持有( )方可上岗作业。
A.操作资格证书
B.相应资格证书
C.岗位证书
D.安全生产考核证书
[判断题]电流互感器属于无触点电器。( )
A.正确
B.错误
[单选题]( ) 与无人机控制站的功能类似,但只能控制无人机的机载任务设备,不能进行飞机的飞行控制
A.指挥处理中心
B.无人机控制站
C.载荷控制站
[单项选择]制作不可见的按钮时,应该在哪一帧加入关键针?()
A. 弹起
B. 按下
C. 指针经过
D. 点击
[判断题]174.放射性同位素找窜管柱通常为油管+Y531封隔器+节流器+球座。
A.正确
B.错误
[判断题]施工单位不得擅自修改经过审批的安全专项施工方案。 ( )
A.正确
B.错误
[多选题]需求条目与技术规范书不得设定( )或( )的技术要求、资格条件。
A.规范性
B.针对性
C.倾向性
D.及时性
[单项选择]
Civilization
Before about 3500 BC, there were cultures, but not civilizations. Prehistoric men and women created societies, constructed houses, lived in villages, hunted and fished, farmed, made pottery, wove cloth and created languages. But unlike more advanced peoples, they did not build cities, read or write. Cities are the
cornerstone of civilized life because with them came other civilizing elements, including differentiation of classes and employment, sophisticated religious and political systems, monumental architecture and the formation of states and empires.
Historians usually begin the story of civilization with
accounts of the world’s first great writers and city-builders, the Sumerians. Because the Sumerians recorded ideas and sagas and listed the names of their rulers, we know more about
them than about prehistoric peoples who left their legacy in stones, bones and pottery.
With the ability to b
A. tell us an interesting story
B. explain the concept of civilization
C. illustrate the development of civilization
D. show civilized people’s regret
[判断题]使用电台通话时,嘴与话筒最佳距离为1厘米。(中)(应急通信)
A.正确
B.错误