[单选题]为了使板牙容易对准工件和切入工件,圆杆端部要倒成圆锥斜角为( )的锥体。
A.、10—15
B.、15—20
C.、20—25
D.、25—30

[简答题]简述欧洲联盟的特点

[单选题]由于晶体二极管是单向导通元件，因此测量出来的正向电阻值与反向电阻值相差( )。
A.越小越好
B.越大越好
C.相同

[判断题]从业人员在运输大巷行走时应走人行道,严禁在轨道中间行走。 ( )
A.正确
B.错误

[判断题]无缝线路应根据季节特点、锁定轨温和线路状态,随意安排全年维修计划。( )
A.正确
B.错误

[判断题]三显示自动闭塞区段通过色灯信号机没有一个绿色灯光和一个黄色灯光的显示。( )
A.正确
B.错误

[单选题]作业现场的生产条件和安全设施等应符合有关标准、规范的要求，工作人员的( )应合格、齐备。
A.劳动防护用品
B.安全工器具
C.施工机具
D.装备

[单项选择]建筑工程饰面砖粘结强度检验时，关于粘结剂硬化前的养护时间以下说法错误的是（）
A. 气温高于15度，不得小于24h
B. 气温在5-15度，不得小于36h
C. 气温低于5度，不得小于72h
D. 低于5度时，标准块应预热至70-80度，再粘贴

[单选题]无人机任务规划需要实现的功能包括:( )
A.自主导航功能,应急处理功能,航迹规划功能
B.任务分配功能,航迹规划功能,仿真演示功能
C.自主导航功能,自主起降功能,航迹规划功能

[多选题]（）不变时，可使用同一张作业票。
A.作业内容
B.作业部位
C.主要作业人员
D.控制措施；

[判断题]站用变的设计容量应满足低温天气下设备加热器、电暖设备的用电需求。(____)
A.正确
B.错误

[判断题]BAS与ISCS互联，BAS负责全线正常、阻塞、火灾工况下的机电设备如通风空调系统、冷水系统、给排水系统、照明系统、扶梯系统（自动扶梯、电梯）等设备的运行状态监视和控制管理。（ ）
A.正确
B.错误

[单选题]信号工区是负责现场信号设备维修工作的基本生产组织，承担管内信号设备日常养护和集中检修工作，实行昼夜值班制度，及时处理( )。
A.行车作业
B.调车作业
C.设备故障
D.发车作业

[单项选择]11个月小儿，发热2天，进食少，偶有吐奶。查体：T38.3℃，烦躁不安，呼吸深大，心率180次/分，四肢凉。应立即给予以下哪种处理（）
A. 给予洋地黄强心治疗
B. CPAP辅助呼吸
C. 抗生素静脉注射
D. 开放静脉通路，快速补液
E. 立即应用退热药物

[判断题]带电水冲洗时，冲洗用水泵可以不接地。( )
A.正确
B.错误

[单项选择]Few natural dangers are more feared than avalanches. Avalanches are a familiar part of European history. Particularly in the Swiss and French Alps. This is where the direction of wars has turned almost instantly because of avalanches wiping out invading armies. In North America, avalanches are limited almost entirely to the Rocky Mountains and the lower ranges to the west, the Sierra Nevadas and the Cascades. Avalanches have occurred in the mountains of New England but not with the regularity and intensity seen in the western mountains. Several methods are used in explaining and predicting avalanches. Scientists are learning about them using research methods. So many of the factors that create avalanches are hidden beneath the snow"s surface that predictions are still largely guesswork. Therefore, winter travelers must assume the worst of conditions when they traverse the slopes. An avalanche occurs when a given amount of snow becomes too heavy for whatever is holding it in place. It then breaks loose and slides downhill. Avalanches are divided into two general categories, loose snow and slab. A loose snow avalanche usually starts at a single point, such as a skier"s track, and spreads out like a fan or a pyramid in a chain reaction. One crystal breaks another free, which multiples as the loose snow moves downhill. Sometimes these avalanches stop after only a few feet. Sometimes they move thousands of tons of snow downhill in speeds up to 300 miles per hour. This creates a shock wave that can flatten parts of a forest that are not even touched by the actual avalanche. Stab avalanches are those that have a wide area of snow which breaks loose in a large piece. These can range in size from just a few square feel to thousands of square feet of snow. The most dangerous and common type of avalanche for skiers is the so-called "soft slab" avalanche. This type occurs most often during, or just after a heavy snowfall. The snow hasn"t yet had a chance to settle and adhere to the existing snow. The heavier and the wetter the snow and the colder the temperature, the less likely the new snow will form a bond with the existing snow.According to the passage, how did avalanches affect wars
A. They hid the armies approaching the city aiding in the attack
B. They killed the armies approaching the city
C. They blocked paths into the city
D. They snowblinded the approaching armies

[单项选择]对离休退休干部的服务工作，应由（）负责。
A. 他们居住地所在单位；
B. 他们党组织关系所在单位；
C. 他们离休退休时所在的工作单位；
D. 他们离退休时户籍所在地单位；

[多选题]极耳胶成品胶液取样粘度偏高，下列哪些会导致该情况
A.PVDF粉多加
B.NMP少加
C.NMP多加
D.PVDF粉少加

[单选题]运算放大器构成的同相比例放大电路的输出电压（ ）。
A.大于1；
B.小于1；
C.只决定于反馈电阻；
D.不确定

[多项选择]中共十六届四中全会提出的加强党执政能力建设的总体目标是( )。
A. 使党始终成为立党为公、执政为民的执政党
B. 成为科学执政、民主执政、依法执政的执政党
C. 成为求真务实、开拓创新、勤政高效、清正廉洁的执政党
D. 成为始终做到“三个代表”、永远保持先进性、经得住各种风浪考验的马克思主义执政党

[单选题]依据《建设工程安全生产管理条例》的规定，实行施工总承包的建设工程，支付意外伤害保险费的单位是( )。
A.总承包单位
B.施工单位
C.总承包单位与施工单位
D.施工单位与监理单位

[多选题]高渗性脱水易出现( )
A.口渴
B.休克
C.尿少
D.皮肤弹性降低

[单项选择]Many people invest in the stock market hoping to find the next Microsoft and Dell. However, I know (31) personal experience how difficult this really is. For more than a year, I was (32) hundreds and sometimes thousands of dollars a day in investing in the market. It seemed so easy, I dreamed of (33) my job at the end of the year, of buying a small apartment in Paris, of traveling around the world. But these dreams (34) to a sudden and dramatic end when a stock I (35) , Texas cellular pone wholesaler, fell by more than 75 per cent (36) a one year period. On the (37) day, it plunged by more than $15 a share. There was a rumor the company was (38) sales figures. That was when I learned how quickly Wall Street (39) companies that, in one way or another, misrepresent the (40) .
In a (41) , I sold all my stocks in the company, (42) margin debt with’ cash advances from my (43) A. turned
B. came
C. went
D. seemed