热门试题:
[单选题] 变压器是根据( )工作原理工作的。
A. 电磁感应
B. 电场感应
C. 热能感应
D. 直接传导
[多选题]异步电动机的接法有哪两种？（ ）
A.有星型（Y）接法
B.三角形（△）接法两种
C.V型接法
D.V-V接法
[单项选择]上、下模座的导套、导柱安装孔中心距精度在（）以下。
A. ±0.01mm
B. ±0.02mm
C. ±0.03mm
D. ±0.04mm
[单项选择]访问新材料在线（http：//www.materialsone.com），判断其主办者属于（）
A. 信息服务商
B. 教育部门
C. 公司企业
D. 行业协会
[单项选择]“劝君莫打三春鸟”，是说此时正是鸟类繁殖季节，更要大力保护鸟类。这里的“三春”指的是（）。
A. 孟春、仲春、季春
B. 立春、春节、春分
C. 春季的第三个月
[单选题] 维持电弧放电的电压一般为( )
A. 10~50V
B. 220~380V
C. 36~220V
D. 12~36V
[单项选择]在冷兵器时代，（）的大小决定了冷兵器作用力的大小。
A. 技能
B. 体能
C. 热能
D. 化学能
[判断题]-C-B-002 4 1 4
使用电焊机作业时应戴防护眼镜或面罩,防止铁渣飞溅伤人。
[T/]
A.正确
B.错误
[单项选择]
Did you ever have someone’s name on the tip of your tongue and yet you were unable to recall it (36) this happens again, do not (37) to recall it. Do something (38) for a couple of minutes, (39) the name may come into your head. The name is there, since you have met (40) person and learned his name. It (41) has to be dug out. The initial effort to recall (42) the mind for operation, but it is the subconscious (下意识) (43) that go to dig up a (44) memory. Forcing yourself to recall (45) never helps because it doesn’t (46) your memory; it only tightens it. Students find the preparatory method helpful (47) examinations. They read over the questions (48) trying to answer any of them. (49) they answer first the ones (50) which they are most confident. Meanwhile, deeper mental activities in the subconscious mind are taking (51) ; work is being done on the (52) <
A. deeds
B. activities
C. movements
D. procedures
[判断题]偏心夹钳的夹紧力是由物体自重通过偏心块和物体间的自锁作用而产生的。
A.正确
B.错误
[单项选择]男性，39岁，右上腹痛伴寒战高热1周，弛张热，体温在38.5～40.1℃间。体检：体温39.7℃，未见明显黄疸，肝肋缘下3cm，有压痛及肌紧张。X线透视见右侧膈肌抬高，运动受限。B超显示液平面。白细胞18．4×109/L，中性粒细胞0.90。应首先考虑
A. 急性肝炎
B. 细菌性肝脓肿
C. 阿米巴肝脓肿
D. 急性胆囊炎
E. 膈下脓肿
[单选题]主流观点认为《三国演义》是在尊刘抑曹、是在贬魏扬蜀，但如果置身其字里行间，不难发现曹、魏实在是光辉的很，而刘、蜀在冠冕堂皇之外总能让人看到背后的阴暗。曹操的败而大笑，刘备的痛哭流涕，曹魏的人才济济，蜀汉的将寡兵微都在暗示着无论以人格魅力还是人心所向上，曹操、魏国是要远远超越于刘备、蜀汉的。写孔明足智多谋而近妖，正反映出蜀汉人才匮乏，需靠人力挽救，相对的曹营谋臣如云，任谁都能提出真知灼见，人力之重显而易见；写勇冠三军的关羽在兵精粮足情况下败走麦城，身首异处，透视出蜀汉政权人才的片面性，而相应的张辽一孤军数次迫退孙权几十万大军，人才的全面性不言而喻。罗贯中事实上一直在用褒扬的语气贬损着正面人物，有时甚至会控制不住对刘备来一句“故把亲儿掷马前”的调侃，一个“故”字，活灵活现。下面选项最符合文段意思的是（ ）。
A.主流观点只是看到了《三国演义》的表面意思，而没有发现作者隐含的深意
B.蜀汉人才的缺乏、片面是主流观点不可能看到的，而除非透过表面看本质才能发现这种缺点
C.“故把亲儿掷马前”中“故”的运用充分反映出主流观点中刘备的宽容和谦和
D.曹操在主流观点中是作为反面人物而出现的，但在作者观点中，他是正面人物，是光辉形象
[判断题]吸食、注射毒品，组织赌博，组织、支持、参与卖淫、嫖娼、色情淫乱活动的，予以撤职或者开除。
A.正确
B.错误
[单选题].地下消火栓应有( )mm和(G)mm的出水口各一个。
A.150
B.120
C.100
D.80
E. 75
F.70 (G)65 (H)60
[多选题]出口混合车道，对ETC用户，要求其将ETC卡插入OBU通行，如交易不成功，则取出()刷卡完成收费；如ETC卡无入口信息，则请司机提供CPC卡完成出口收费；如不能提供ETC卡或CPC卡，则按()操作(车牌没有识别则需要收费员手工录入车牌)调用在线计费完成收费，并收取CPC卡()。
A.ETC卡
B.丢卡
C.坏卡
D.工本费
[单选题]在电路图上，一个组合符号以集中表示形式画在电路图的两处或多处，在每一处只部分对外连接，且标注同一个项目代号的表示方法，称为( )表示法。
A.集中
B.半集中
C.分开
D.重复
[填空题]边境管理法规按照法律规范的内容划分，可以分为（ ）。
[填空题]Memory is our most important possession. Without memory, you wouldn’t know who you are. You couldn’t think about the past or plan for the future. Memory is (36) for everything we do as human beings. Its (37) that we have this magical time machine in our heads that (38) us to record experiences and then use that information at a later time. (39) how the brain makes and (40) memories has to be one of the most important of all scientific (41) .
People who feel they must (42) for having a bad memory should stop using a poor memory as an excuse for forgetting things. The only people who have a poor memory are those whose memory function has been (43) by disease or damage. (44) . You must associate it with something. You must exercise it or risk losing its effectiveness. (45) . Second, cramming for finals is a very bad way to learn something that will last. Information from cram
[单项选择]按星级饭店规定标准，每个房间摆放不少于两块香皂，每块净重不能低于（）。
A. 15克
B. 25克
C. 30克
D. 45克
[不定项选择题]共用题干
Scientists Develop Ways of Detecting Heart Attack
German researchers have___1___a new generation of defibrillators and earlywarning software aimed at offering heart patients greater protection___2___sudden death from cardiac arrest.
In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases___3___by disruption to the heart's rhythm. Those most at risk are pa- tients who have___4___suffered a heart attack,and for years the use of defibrillators has proved useful in diagnosing___ 5___ disruptions to heart rhythms and correcting them automat-ically by intervening within seconds. These devices___6___ a range of functions,such as that of pacemaker.
Heart specialists at Freiburg's University Clinic have now achieved a breakthrough with an implanted defibrillator ___7___of generating a six-channel electrocardiogram(EC
G)within the body. This integrated system allows early diagnosis of___8___blood-flow problems and a pending heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that renders the evaluation of ECG data___9___.
The overwhelming___10___of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs.“Many of the current programs only ___11___ into account a linear correlation of the data. We are,however,making use___12___ a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system,”
Hagen Knaf says,“___ 13___ changes in the heart beats over time can be monitored and indi- vidual variations in patients taken into account.”An old study of ECG data,based___14___ 600 patients who had suffered a subsequent heart attack,enabled the researchers to compare risks and to show___15___the new software evaluates the data considerably better.
8._________
A.chronic
B.acute
C.recurrent
D.persistent
[判断题]在现场事故中，最严重的是电网事故。
A.正确
B.错误
[单项选择]自我意识萌芽的时间是（ ）。
A. 5岁
B. 4岁
C. 3岁
D. 2岁
[单选题]在不接地系统中，如发生单相接地故障时，其它相线对地电压会( )。
A.升高
B.降低
C.不变
[多选题]装卸高压熔断器，应戴（ ）。必要时使用绝缘操作杆或绝缘夹钳。
A.绝缘鞋
B.护目镜
C.绝缘靴
D.绝缘手套
[判断题]旅客手杖、拐杖存放于封闭的储藏空间，便于客舱乘务员和安全员有效监控。
A.正确
B.错误
[多项选择]根据现金来源的不同，现金流量表主要分为( )等几个部分。
A. 策划活动的现金流量
B. 投资活动的现金流量
C. 销售活动的现金流量
D. 筹资活动的现金流量
E. 经营活动的现金流量
[单选题]当原边网压高于32kV且持续( )ms,四象限脉冲整流器和逆变器的门极均被封锁,输入回路中的工作接触器断开,同时向微机控制系统发出原边过电压信息。
A.1
B.5
C.10
[简答题]有人认为，《窦娥冤》前三折已经将悲剧的氛围推向了极致，第四折反而冲淡了悲剧力量，应该删除。你是怎么认为的？请论述。
[单选题]（）不得延期。
A.配电第一种工作票
B.配电第二种工作票
C.带电作业工作票
D.低压工作票
[多选题]有下列哪些情况属于“占用区间”:( )
A.区间已进入列车
B.区间已被列车取得占用的许可
C.封锁的区间(如安排进行施工作业等)
D.区间内有停留或溜入的列车、客车车组、机车、车辆。列车发出后溜入的亦算
[单选题]地下有限空间内手持照明设备电压应不大于（ ）。
A.9V
B.12V
C.24V
D.36V
[多选题]车钩上带有对中装置的有( ）。
A.全自动车钩
B.半自动车钩
C.半永久车钩
D.所有车钩
[单选题]进行容量分析时，用来指示反应终点的试剂叫（ ）。
A.润滑剂
B.调和剂
C.指示剂
D.分析剂
[多选题]在混合桥上，护轨与基本轨头部间净距( )规定。
A.当明桥面长度等于或小于50m时，其净距在明桥面与有砟桥面上均为500mm；
B.当明桥面长度等于或大于50m时，其净距在明桥面与有砟桥面上均为500mm；
C.当明桥面长度大于50m时，在明桥面和有砟桥面上各自采用自身的净距和允许误差并在明桥面上采用不大于1.5％的斜率完成间距变化的过渡。
D.当明桥面长度小于50m时，在明桥面和有砟桥面上各自采用自身的净距和允许误差并在明桥面上采用不大于1.6％的斜率完成间距变化的过渡。
