[单项选择]根尖诱导成形术的工作长度为切缘距根尖
A. 小于0.5mm
B. 0.5～1mm
C. 1～2mm
D. 2～3mm
E. 3mm以上

[单选题]直流 V－M 调速系统较 PWM 调速系统的主要优点是( )。
A.调速范围宽
B.主电路简单
C.低速性能好
D.大功率时性价比高

[单项选择]Our house was the oldest in the village. It was nearly three hundred years old. Although we were six children, and a mother and a father, we were not by any means alone in the house. We were sharing it with big families of mice and spiders(蜘蛛). There were great- grandparents, grandparents, fathers and mothers, and hundreds of mouse and spider children.
My mother would never let us kill a spider, not even a hairy old grandfather. "If you want to live and rich," she used to say, "let a spider run alive." And so the spiders, our enemies, were beaten and kicked but never killed. But she had no such dealing with the mice.
One of our problems was that my mother hated cats; and we never owned a single cat. We kept dogs, often two or three at the same time, but very few dogs can move fast enough to catch a lively young mouse. Every night we set a dozen mousetraps(捕鼠器), each with a small piece of cheese. Sometimes the cheese disappeared, but the mice usually seemed too wise to go near
A. Because the house was old, the family were troubled by lots of mice and spiders.
B. The children did not live in the house because they were afraid of the spiders.
C. The trouble was that there was no water supply in the old house.
D. Spiders and mice are a part of the family.

[判断题]对公账户签约活利丰时，签约账户留存金额必须大于等于各款第一档的最低留存金额，否则不能签约。
A.正确
B.错误

[单选题] 硫化氢置人于死亡的浓度为( )ppm。
A.50
B.100
C.200
D.500

[简答题]向有车线路调车，调车信号无法正常开放时,能反排进路的，按反排进路办理；不能反排时，以（ ）方式办理。

[单项选择]耐压台和（）均为通用的实验仪器，应注意保管、按时检定、保持其准确度（试验电压为正弦50Hz交流电）。
A. 兆欧表
B. 电压表
C. 功率表
D. 电流表

[多选题]下列各项作业中,属于品种级作业的有( )。
A.产品组装
B.产品生产工艺改造
C.产品推广方案制定
D.产品检验

[判断题]“划线更正法”更正时，更改过多（超过5处时）导致报表不清时，应另填写一份，该报表作废。
A.正确
B.错误

[单选题]在下水道、煤气管线、潮湿地、垃圾堆或有腐质物等附近挖坑时，应设( )。
A.工作负责人
B.工作许可人
C.监护人
D.工作班成员

[简答题]简述运用成语需注意的地方。

[单选题]200～250km/h线路轨道质量指数（TQI）轨距项目管理值为（ ）。
A.0.6
B.0.7
C.0.8
D.0.9

[判断题] Linux查看系统运行了多长时间使用date命令。
A.正确
B.错误

[判断题]按《铁路技术管理规程》列车运行等级顺序，快速旅客列车属于二等。
A.正确
B.错误

[单项选择]下列哪一组药物可能发生竞争性拮抗作用：
A. 肾上腺素和乙酰胆碱
B. 肾上腺素和氯丙嗪
C. 毛果芸香碱和新斯的明
D. 间羟胺和异丙肾上腺素
E. 阿托品和尼可刹米

[判断题]电缆沟的盖板开启后，应自然通风一段时间，经检测合格后方可下井沟工作。
A.正确
B.错误

[简答题]如何进行10-P-201.控制油压力低报警、备用泵自启动、联锁停车试验？

[单选题](第十七条)进入有发生爆炸、中毒危险区域侦察时,选择精干人员,并严格控制人数,进入危险化学品泄漏区域侦察前,必须设置( ),并在安全区域预留同等级防护的后备小组,随时做好救援准备。(C)
A.保护区
B.安全区
C.洗消区

[判断题]679>一个实际的电压源,不论它是否接负载,电压源端电压恒等于该电源电动势。()
A.正确
B.错误

[多选题]中共七大把党在长期奋斗中形成的优良作风概括()。
A. 理论和实践相结合的作风
B. 和人民群众紧密联系在一起的作风
C. 自我批评的作风
D. 安于享乐的作风

[简答题]证据学理上的分类有哪些？

[单选题] 第70题 （3.0分） 题号:1870 难度:中 第4章
A.先按住Ctrl键,然后拖动鼠标
B.先按住Alt键,然后拖动鼠标
C.先按住Shift键,然后拖动鼠标
D.先按住Alt+Shift键,然后拖动鼠标

[单选题]在信息时代,下列哪一项调整了著作权法,使得有版权的资料受到以技术为基础的保护是非法的?
A.数字千年版权法
B.隐私法
C.信息自由法
D.电子通信隐私法
E.计算机软件版权法

[单选题]第一CTA结晶器空气管A套流量低流量联锁值是多少触发Z-115。
A.1.9t/h
B.0.95t/h
C.1t/h

[单项选择]Humans not only love eating ice cream, they enjoy (21) it to their pets. Market studies show that two thirds of all dog owners give ice cream to the dogs. (22) , says William Tyznik, an expert in animal nutrition at Ohio State University, "ice cream is not good for dogs. It has milk sugar in it, " he says, "which dogs cannot (23) very well. "
(24) by that knowledge but aware of the desire of dog owners to (25) their companions, Tyznik invented a new frozen treat for dogs that, he says, is more nutritious than ice cream-and as much (26) to eat. The product, called Frosty Paws, is made of a liquid by-product of cheese and milk with the sugar (27) Frosty Paws also contains refined soy flour, water, vegetable oil, vitamins and minerals. It (28) Tyznik, who has also invented a horse feed (called Tizwhiz) and (29) dog focd (named Tizbits) , three years to (30) the Frosty Paws formulas, and two
A. swallow
B. consume
C. digest
D. exude