热门试题:
[判断题]蒸发池水位应不低于排水沟的沟底，蓄水深度不大于1．5~2．0m，蓄水容量一般不超过200~300m3。（）
[判断题]蓄热式电供暖设备的释蓄热量比不低于90%。
A.正确
B.错误
[单选题]（ ）绝缘电缆的耐热性最好。
A.500
B.1000
C.2500
D.10000
[单选题]电动工具的电源引线,其中黄绿双色线应作为 ( )线使用。
A.相
B.工作零线
C.保护接地
[单选题]
井下安全阀通过( )传递压力来实现自动开启和关闭。
A.座套
B.阀板
C.流动短节
D.控制管线
[单选题]在杆塔上作业，工作点下方应按（）设围栏或其他保护措施。
A.坠落半径
B.作业范围
C.工作区域
D.活动范围
[多选题]5.触头间恢复电压大小与（ ）有关。
A.A.电源电压
B.B.介质
C.C.负载性质
D.D.电弧电流变化速度
E.NULL
F.NULL
[单项选择]普通型流脑临床特征性体征是皮肤（）
A. 瘀点或瘀斑
B. 斑丘疹
C. 黑痂
D. 水疱
E. 脓肿
[单项选择]关于面神经炎下列哪项是不正确的：（）
A. 常呈单侧面神经周围瘫
B. 可伴有内耳、乳突区、下颌角疼痛
C. 病侧面部感觉异常和咀嚼无力
D. 贝尔现象阳性
E. 乳突前方可有压痛
[多选题]质保金、履约金考核标准:参照“保证金”“履约金”管理办法,在( )情况下,每发现一个品牌扣0.2分。
A.无质保/履约金
B.未足额收取
C.缴纳延时
[单选题]患者男，70岁。吞咽困难3个月，食管钡透：中段有3cm的不规整食管充盈缺损，镜取活体组织病理为鳞癌，心电图有ST段下降、T波倒置，肺功能严重障碍，其治疗方法为
A.药物疗法
B.根治性手术切除
C.姑息性手术
D.放射治疗
E.胃造瘘术
[填空题]From the health point of view we are living in a marvelous age. A large number of once (36) illnesses can now be (37) by modem drugs and surgery. It is almost certain that one day remedies will be found for the most (38) remaining diseases. The life (39) on average has increased (40) . But though the possibility of riving a longer life is greater than ever before, every day we (41) the incredible slaughter on the roads. Man versus the motor-car! It is a never-ending battle which man is (42) .
It has been rightly said that when a man is sitting behind a steering-wheel, his car becomes the (43) of his personality. There is no doubt that the motor-car often brings out a man’s worst qualities. (44) .
It is high time a world code were created to reduce this senseless waste of human life. (45) . Present drinking and driving laws should be made much stricter. Maximum and m
[单选题]利用小型养路机械整治线路病害，更换或修理轨道（道岔）伤损零部件，属于Ⅰ级维修项目。
A.A.正确
B.B.错误
[单项选择]商标牌号属于（）
A. 原产地标志
B. 制造标志
C. 品名标志
D. 商品说明标志
[多项选择]张某为A旅行社导游，在庐山带团时，擅自减少一原定景点，并变更至一新景点游览，对张某不可予以的处罚为( )。
A. 责令改正
B. 吊销导游证
C. 罚款3000元
D. 新景点免票
E. 罚款500元
[单项选择]某玩具公司设计了一个精美的网站，在“六一儿童节”即将到来之时，加大了宣传，很多人登录到此网站，查询具体信息，如按孩子的年龄、性别、性格等特征查找合适的玩具，但可惜的是网站没有提供此项功能，错失了机会。从上面可看出，此公司网站哪个阶段做得不足（）
A. 交互阶段
B. 高级交互阶段
C. 高级储备阶段
D. 数据库阶段
[单选题]下列不属于胎儿的附属物的是
A.胎盘
B.脐带
C.蜕膜
D.羊水
E.胎膜
[单选题]( )网络类型属于局域网。
A.以太网
B.X．25
C.Internet
D.ISDN
[单选题]CAS-OB处理钢水要求( )。
A.满罐钢水
B.底吹氩要在盛钢桶底部正中心
C.渣厚不大于150mm
D.必须是合金钢水
[单项选择]声音是振动波，具有周期、频率和（）
A. 音调
B. 音强
C. 音色
D. 振幅
[不定项选择题]共用题干
Learn about Light
1 .Ancient civilizations were amazed by the existence of light for thousands of years. The Greek philosophers believed that light was made up of countless,tiny particles that enter the human eye and create what we call vision. However,Empedocles and a Dutch scientist named Christian Huygens believed that light was like a wave. According to them,light spread out and travelled like a straight line. This theory was accepted during the 19th century.
2 .In 1905,Albert Einstein published a research paper in which he explained what is re-ferred to as the photoelectric effect. This theory explains that particles make up light.The particles Einstein was referring to are weightless bundles（束）of electromagnetic（电磁）energy called photons（光子）.Today,scientists agree that light has a dual（二重）nature一it is part particle and part wave. It is a form of energy that allows us to see things around us.
3 .Things that give off light are known as sources of light. During the day,the primary source of light is the sun. Other sources of light include stars,flames,flashlights,street lamps and glowing gases in glass tube.
4 .When we draw the way light travels we always use straight lines. This is because nor-mally light rays travel in a straight line. However,there are some instances that can change the path and even the nature of light. They are reflection,absorption,interference（干扰）, etc.
5 .Physicists have attempted to measure the speed of light since the early times. In 1849, Hippolyte Fizeau conducted an experiment by directing a beam of light to a mirror located kilometers away and placed a rotating cogwheel（旋转齿轮）between the beam and the mirror. From the rate of rotation of the wheel,number of wheel's teeth and distance of the mirror,he was able to calculate that the speed of light is 313 million meters per second. In a vacuum（真空）,however,the speed of light is 299,792,458 meters per second. This is about a million times faster than the speed of an airplane.
Objects are visible to the human eye as light is______.
A.sources of light
B.the speed of light
C.the path of light
D.a straight line
E.a beam of light
F.a form of energy
[单选题]易拉罐通过X射线安检仪呈（ ）。
A.橙色
B.黑色
C.蓝色
D.绿色
[单项选择]下列不属于阳偏衰的病因是（）。
A. 先天不足
B. 后天失养
C. 劳倦内伤
D. 久病伤正
E. 热病后期正气大伤
[多选题] 申请领取施工许可证，应当具备下列条件：( )。
A.已经办理建筑工程用地审批手续
B.在城市规划区的建筑工程，已经取得规划许可证
C.有保证工程质量和安全的具体措施
D.有满足施工需要的施工图纸及技术资料
E.法律、行政法规规定的其他条件
[多选题]关于“未经人民法院依法判决，对任何人都不得确定有罪"正确的理解是（ ）。
A.人民法院确定任何人有罪，必须依法判决。
B.公安.检察机关在侦查.起诉阶段对嫌疑人作出的有罪确认是程序上的，不具有终局性。
C.未经依法开庭审理.作出判决，并正式宣判，人民法院也不得确定任何人有罪。
D.只有人民法院才有确定被告人有罪的权力。
E.人民法院可以随意定罪
[单选题]影响化学反应速率的决定性因素是( )。
A.反应物的种类和性质
B.浓度
C.压力、温度
D.催化剂
[多选题]从结构上可以将城域网分为()。
A.骨干层
B.汇聚层
C.接入层
D.物理层
[单选题]书壳是精装书籍的( )。
A.内页
B.护封
C.内套
D.外套
[多选题]( )及( )上，禁止停留机车车辆。
A.安全线
B.牵出线
C.避难线
D.调车线
[简答题]
Mrs. Banks is talking to Polly, a young schoolboy. Mrs. Banks and Polly are talking about pets.
Mrs. Banks: Good morning, Polly. I haven’t seen you for a few months. I expect you’ve been busy at school.
Polly: Yes, I have, Mrs. Banks, but today I have a holiday.
Mrs. Banks: I see you have your dog with you. Have you just taken him for a walk
Polly: No, I’ve been to the vet with him.
Mrs. Banks: What’s the trouble
Polly: Nothing serious. He is still a puppy and he needed his anti-rabies injection.
Mrs. Banks: I’m glad to see that you keep him on a lead. Many people allow their dogs to run around without even a collar on, and then they can easily be mistaken for stray dogs.
Polly: My mother says that if you have a pet you should look after it well.
Mrs. Banks: That’s quite true. I see yours is well cared for. His coat is shiny and he is in very good condition.
Polly:
[判断题]两条刮板链的伸长量达到或超过原始长度的2.5%时，则需要更换，更换时要成对更换。
A.正确
B.错误
[单选题]出版了《工业管理与一般管理》一书的是
A.梅奥
B.法约尔
C.麦格雷戈
D.泰勒
E.卢因
