热门试题:
[判断题]配电终端连续离线24小时以上属于严重缺陷
A.正确
B.错误
[单选题]流体在圆形直管内做滞流流动时,其管中心最大流速u与平均流速uC.的关系为( )
A.uC=0.5u
B.u=0.5uC
C.u=2uC
D.u=3uC
[填空题] Among the kinds of social gestures most significant for second-language teachers are those which are (26)______ in form but different in meaning in the two cultures. For example, a Colombian who wants someone to (27)______ him often signals with a hand movement in which all the fingers of one hand, cupped, point downward as they move rapidly (28)_______. Speakers or English have a similar gesture through the hand may not be cupped and the fingers may be held more loosely, but for them the gesture means goodbye or go away, quite the (29)______ of the Colombian gesture. Again, in Colombian, a speaker of English would have to know that when he (30)________ height he most choose between different gestures depending on whether he is (31)_______ a human being or an animal. If he keeps the palm of the hand (32)_________ the floor, as he would in his own culture when making known the height of a child, for example, he will very likely be greeted by laughter, in Colombia this gesture is (33
[单选题]小李和小王在220kV变电站进行210断路器的SF6气体采样和处理一般渗漏时,应戴(),并进行通风。
A.护目镜
B.棉纱口罩
C.绝缘手套
D.防毒面具或正压式呼吸器
[单选题]35kV以下( )、配有自备应急电源和客户设备部分运行的项目,应制定切实可行的投运启动方案。
A.单电源
B.双电源
C.多电源
D.单回路
[单项选择]CSMA/CD网络中,所有主机都可独占网络带宽______
A. true
B. false
[判断题]随车机械师需下车检查时,应告知司机,并说明检查方向。
A.正确
B.错误
[判断题]实施查验过程中,查验关员不得离开实施查验的现场,特殊情况下确需离开的,应经带班科长批准,并采取加封等必要的安全措施,或者在查验现场办理交接手续,由接替的关员继续实施作业,直至作业完毕。
A.正确
B.错误
[单选题]煤的分析有( )和工业分析两种。
A.化学分析
B.元素分析
C.物理分析
D.成分分析
[单选题]1700.红外线轴温探测站的设置,应避开曲线大坡道,在来车前方)以上直线段并不得有道岔
A.50m
B.40m
C.30m
D.60m
[多选题]对于下列()严重破坏社会治安秩序的行为,在人民警察判明后,经警告无效的,可以使用武器。
A.非法集会
B.聚众械斗
C.暴乱
D.非法游行
[多选题]在新的历史条件下,与马克思所处的时代相比,深化对创造 价值的劳动的认识主要有( )。
A.劳动的科技含量和知识含量增加了
B.科技人员和管理人员的劳动在劳动总量中的比重增加了
C.农业劳动已成为物质生产劳动的基本形式
D.在总的劳动消耗量中物化劳动的比重增加而活劳动的比重相对减少了
[单项选择]种类组成贫乏,乔木以松/云杉/冷杉/落叶松为主的生态系统()
A. 雨林
B. 季雨林
C. 落叶阔叶林
D. 北方针叶林
[单选题]在从事生产劳动过程中,在车站线群内、()严禁骑行自行车、电瓶车、摩托车等交通工具代步或运送设备。确需在站台上、场间道路上骑行时应明确安全距离、应急避险等安全措施。
A.路基上
B.路肩上
C.线路内
D.线路上
[单选题]掘路施工应做好防止交通事故的安全措施。施工区域应用标准路栏等进行分隔,并有明显标记,夜间施工人员应佩戴反光标志,施工地点应加挂()。
A.照明灯
B.警示标志
C.警示灯
D.标示牌
[单选题]下列不属于货币市场特点的是( )。
A.流动性强
B.风险小
C.偿还期短
D.筹集的资金大多用于固定资产投资
[多选题]某长途客运车辆夜间10:30左右在高速公路运行过程中,驾驶员已连续驾驶3.5小时,车辆突然与中央隔离带发生擦刮后驾驶员猛打一把方向盘,该客车向右冲破路边侧护栏翻于路下,事故造成5人死亡,8人受伤,客车严重受损。事故调查发现,该客运企业共有营运客车503台,专职监控人员2名,监控值班时间为上午6;00—晚上22:00;驾驶员在当天24小时内累计驾驶时间为7.5小时,客车虽已经出事故,但客运企业监控终端上仍然显示该车辆还在上午行驶的班线上。
依据案例内容,下列说法错误的有( )。
A.按照生产安全事故分类标准,该起事故属于一起重大事故;
B.按照规定该起事故中驾驶员没有违反相关规定,不存在疲劳驾驶;
C.该客运企业专职监控人员按照规定应至少有5名;
D.客运企业的监控数据应当至少保存6个月,对驾驶员违法驾驶信息及处理情况的监控数据应当至少保存1年;
E.该事故客运企业安全管理人员应承担一定责任。
[单选题]根据民法总则的规定,下列民事法律行为中,属于可撤销的是( )。
A.违背公序良俗的
B.基于重大误解实施的
C.无民事行为能力人单独实施的
D.行为人与相对人以虚假的意思表示实施的
[判断题]耐火度是用专门的测温锥测定的。 ( )
A.正确
B.错误
[填空题]
Theories of the value of art are of two kinds, which we may call extrinsic and intrinsic. The first regards art and the appreciation of art as means to some recognized moral good, while the second regards them as valuable not instrumentally but as objects unto themselves. It is characteristic of extrinsic theories to locate the value of art in its effects on the person who appreciates it. (41) _____________________
The extrinsic approach, adopted in modem times by Leo Tolstoy in What Is Art in 1896, has seldom seemed wholly satisfactory. Philosophers have constantly sought for a value in aesthetic experience that is unique to it and that, therefore, could not be obtained from any other source. The extreme version of this intrinsic approach is that associated with Walter Pater, Oscar Wilde, and the French Symbolists, and summarized in the slogan "art for art’s sake."(42) _____________________
Between those two extreme views there lies, once again, a
[单选题] 在ISO-14001标准体系中,为了确保环境因素评价的准确性,在识别环境因素时应考虑的三种时态是( )。
A. 过去、现在和将来
B. 开车、停机和检修
C. 正常、异常和紧急
D. 上升、下降和停止
[判断题] 雷电可通过其它带电体或直接对人体放电,使人的身体遭到巨大的破坏直至死亡。
A.正确
B.错误
[单选题]工程建设的不同阶段,对工程项目质量的形成起着不同的作用和影响。其中项目决策阶段是( )。
A.将项目质量目标和水平具体化
B.确定项目应达到的质量目标与水平
C.将项目质量目标和制度具体化
D.确定项目应达到的质量目标与制度
[单项选择] What do we mean by a perfect English pronunciation In one 【B1】 there are many different kinds of English as there are speakers of it. 【B2】 two speakers in exactly the same 【B3】 . We can always hear differences 【B4】 them, and the pronunciation of English 【B5】 a great deal in different geographical 【B6】 How do we decide what sort of English to use as a 【B7】 This is not a question that can be 【B8】 in the same way for all foreign learners of English. 【B9】 you live in a part of the world 【B10】 India or west Africa, where there is a long 【B11】 of speaking English for general communication purpose, you should 【B12】 to acquire a good variety of the pronunciation of this area. It would be 【B13】 in these circumstances to use as model BBC English or 【B14】 of the sort. On the other hand, if you live in a country 【B15】 there is no traditional use of English, you must take 【B16】 your model some form of 【B17】 English pronunciation. It does not 【B18】 very much which form you choose. The most 【B
A. areas
B. parts
C. countries
D. spaces
[填空题]炉顶操作的好坏将直接影响化学产品和()的产量和质量。
[单项选择]How to Do Well In Exam
Do not underestimated(低估) the power of revision in the days and hours before and examination. The closer you are to the exam, the more chance you have of storing and retaining crucial information. But do not overdo it._________(46). An effective daily routine can help you through an exam period, so in the days leading up to your first exam, get into the habit of being up and ready to work by game. It can be a shock to the system after months of working to your own timetable to be mentally alert at that time if you have not prepared for it.
On the day of the exam, have a good breakfast, pack two of everything you need ( pens, pencils, erasers, etc. ) ,then make your way to the examination hall in good time._________(47).
Once in your seat, simply pause for a few seconds and collect your thoughts. Close your eyes and take in a few slow, deep breaths to help you relax. When you turn over the test paper, spend a short period reading through all the ins
[单选题]‐年版汇丰银行券1000元港币,倾斜观察钞票,光彩光变图案( )并可见一条光纹上下滚动
A.金色变红色
B.黄色变绿色
C.金色变绿色
D.绿色变金色
[填空题]学过正方体、长方体、拦河坝等形体的体积计算公式后,学习一般柱体的体积计算公式(V=SH),这是上位学习,也叫______学习。
[单选题]指定车次的限速调度命令(施工开通后()限速除外),当车站采用书面方式交付司机后,车站值班员应使用列车无线调度通信设备与司机核对限速内容。
A.第1列
B.第1列、第2列
C.第1列、第2列、第3列
D.第1列、第2列……
[单项选择]传染病流行的基本条件是 ()
A. 自然因素、社会因素
B. 患者、病原携带者、受感染的动物
C. 散发、流行、暴发流行
D. 传染源、传播途径、易感人群
E. 病原体、人体、外环境
[多选题]《变电评价管理规定》规定变电设备评价分为( )三大类。
A.精益化管理评价
B.安全性评价
C.年度状态评价
D.动态评价
[单选题]列车挤岔时,客车司机处理描述中错误的是?( )
A.列车发生挤岔事故时,司机要马上按压紧急停车按钮停车,在相关工作人员未到达时严禁动车;司机马上将情况如实的报告行调及轮值;
B.如车厢内有乘客时,司机要做好广播安抚乘客,必要时按照行调的指示清客;
C.司机要做好现场情况的保护工作,坚守岗位,至事故处理主任到达后按照其指示执行。
D.立即后退到发车点,再视情况报行调。
[多选题]穿着一级化学防护服可以进入( )场所进行抢险救援工作。
A.无氧、缺氧
B.氨气、氯气、烟气等气体现场
C.汽油、丙酮、醋酸乙酯、苯、甲苯等有机介质气体现场
D.硫酸、盐酸、硝酸等腐蚀性液体现场
E.氨水、氢氧化钠等腐蚀性液体现场
[判断题]人与自然是生命共同体,人类必须尊重自然、顺应自然、保护自然。
A.正确
B.错误