热门试题:
[多项选择]农民在温室大棚增施二氧化碳的目的是（）。
A. 杀菌消毒
B. 提供光合作用的原料
C. 提高温室大棚的温度
D. 吸收太阳紫外线和可见光
[单选题]计量作业现场，需要断开双电源、多电源、分布式电源以及带有自备电源的客户的连接点开关后，应验明可能来电的各侧均（ ）。
A.无电压
B.无电流
C.无电
D.停电
[单项选择]
B
根据下面短文回答下列问题。The bus will not go to Boston.
[A] True
[B] False
[填空题] 列车起动后,机班应进行()瞭望,确认列车起动正常。
[多选题]岔线、段管线、货物线取送车辆作业前须检查（ ）内容符合规定。
A.检查道岔、大门、线路
B.检查停留车辆
C.检查货物堆放距离
D.检查装卸车进度情况
[单选题]细辛药材的原植物属于
A.毛茛科
B.木兰科
C.马兜铃科
D.伞形科
E.菊科
[单选题]运行中的漏电保护装置的绝缘电阻最低不得低于（ ）MΩ。
A.0.5
B.1
C.1.5
D.2
[单项选择]
Advances in computers and data networks inspire visions of a future "information economy" in which everyone will have (1) to gigabytes of all kinds of information anywhere and anytime. (2) information has always been a (3) difficult commodity to deal with, and, in some ways, computers and high-speed networks make the problems of buying, (4) , and distributing information goods worse (5) better. The evolution of the Internet itself (6) serious problems. (7) the Internet has been privatized, several companies are (8) to provide the backbones that will carry traffic (9) local networks, but (10) business models for interconnection—who pays how much for each packet (11) , for example—have (12) to be developed. (13) interconnection standards are developed that make (14) cheap and easy to transmit information across independent networks, comp
A. but
B. yet
C. still
D. then
[判断题]【判断】 在直接影响车辆安全的所有心理品 质中,最重要的是驾驶员对道路情况变化的反应速 度。
A.正确
B.错误
[填空题]CTOD("04-01-01")+20的结果是______。
[单项选择]My father was a foreman of a sugar-cane plantation in Rio Piedras, Puerto Rico. My first job was to drive the oxen that ploughed the cane fields. I would walk behind an ox, guiding him with a broomstick. For $ 1 a day, I worked eight hours straight, with no food breaks.
It was very tedious work, but it prepared me for life and taught me many lasting lessons. Because the plantation owners were always watching us, I had to be on time every day and work as hard as I could. I’ve never been late for any job since. I also learned about being respectful and faithful to the people you work for. More important, I earned my pay; it never entered my mind to say I was sick just because I didn’t want to work.
I was only six years old, but I was doing a man’s job. Our family needed every dollar we could make because my father never earned more than $ 18 a week. Our home was a three room wood shack with a dirty floor and no toilet. Nothing made me prouder than bringing home money to
A. Having a family of eight people
B. Owning his own golf course
C. Bringing money back home to help the family
D. Helping his father with the work on the plantation
[单项选择]不吃素菜，做菜必须加肉是（）饮食习惯。
A. 汉族人
B. 维吾尔族人
C. 回族人
D. 傣族人
[判断题](47086)( )路基面是指路基顶面,包括铺设轨道的部分。(1.0分)
A.正确
B.错误
[单项选择]疟原虫感染人体的阶段为（）
A. 配子体
B. 滋养体
C. 子孢子
D. 裂殖子
E. 环状体
[单项选择]起吊集装箱时，只要确认开闭锁灯和顶销灯亮就可以工作了。（）
A. 正确
B. 错误
[单选题]224为保证抽油机底座水平，可加斜铁找平，加垫斜铁数不能超过()块。
A.(A)1
B.(B)2
C.(C)3
D.(D)4
[判断题]从理论上讲，储层损害对油气开发的影响是有限的，而增产措施的效果是无限的。（）
[单选题]护理人员的道德情感不包括
A.对生命的热爱与尊重
B.对事业的无私奉献
C.对病人高度负责
D.对个人利益的追求
[单选题]一旦初步确定伤员()，应立即招呼周围的人前来协助抢救，哪怕周围无人，也应该大叫“来人啊
A.出血
B.B意识丧失
C.晕厥
D.身体不适
[多项选择]青年人树立正确的择业观，做到以下几点是十分必要的（）
A. 树立崇高职业理想，重视人生价值实现
B. 服从社会需要，追求长远利益
C. 把物质追求放在首位
D. 打下坚实基础，做好充分准备
[判断题]生产经营单位可以将生产经营项目、场所、设备发包或者出租给没有办公场所或者相应资质的单位或者个人。
A.正确
B.错误
[单选题]下面( )类型的“绿色通道”车辆，可以享受优惠政策
A.超限超载超过5%的鲜活农产品运输车辆
B.混装其他农产品超过车辆核定载质量或车厢容积20%的鲜活农产品运输车辆
C.伪装的绿色通道车辆
D.整车合法装载运输鲜活农产品的车辆
[判断题]( )转向架下心盘垫板铁木可混合使用，不得超过二层。（）(1.0分)
A.正确
B.错误
[多选题]下列对曲线钢轨磨耗产生的原因叙述正确的是( )。
A.曲线超高设置不当,轨底坡不正确,引起钢轨偏载和轮轨不正常接触,加剧钢轨的磨耗
B.曲线方向不圆顺,使列车产生摇晃;缓和曲线超高递减距离不够,顺坡率过大,引起列车进入或驶出曲线时产生剧烈震动.摇晃和冲击
C.曲线状态不良
D.钢轨缺乏涂油措施,以及单线线路上下行列车速度相差悬殊。
[单选题]王爷爷最主要的问题是( )
A.健康问题
B.生活问题
C.精神问题
D.康复问题
E.家庭亲情
[单选题]劳动法的首要原则是()。
A.保障报酬权
B.保障物质帮助权
C.保障劳动者的劳动权
D.保障休息休假权
[填空题]A famous character, who always daydreams of doing exciting things, created by James Thurber, is named ______.
[判断题]由变压器基本原理知，50 Hz变压器其体积与重量较大，而高频变压器其体积与重量就成倍地减小。（）
A.正确
B.错误
[单项选择]在中国，海洋环境污染防治的第一个规范性法律文件《防止沿海水域污染暂行规定》制定于（）。
A. 1964年
B. 1974年
C. 1978年
D. 1982年
[单选题]4±1
A.4±1
B.5±1
C.6±1
D.7±1
[多项选择]门式脚手架剪刀撑设置要求包括（）。
A. 当搭设高度在24m及以下时，在脚手架的转角处、两端及中间间隔不超过15m的外侧立面必须各设置一道剪刀撑，并应由底至顶连续设置
B. 当搭设高度在24m及以下时，在脚手架的转角处、两端及中间间隔不超过20m的外侧立面必须各设置一道剪刀撑，并应由底至顶连续设置
C. 剪刀撑应采用扣件与门架立杆扣紧
D. 脚手架高度超过24m时，应在脚手架外侧连续设置剪刀撑；悬挑式脚手架应在脚手架全外侧立面上必须设置连续剪刀撑
E. 剪刀撑斜杆若采用搭接接长，搭接长度不宜小于1000mm，搭接处应采用3个及以上旋转扣件扣紧
[单项选择]以下改善维生素C注射剂稳定性的措施中，不正确的做法是
A. 加入抗氧剂BHA或BHT
B. 通惰性气体二氧化碳或氮气
C. 调节pH至6.0～6.2
D. 采用100℃，流通蒸汽15min灭菌
E. 加EDTA-2Na
[单选题]以下不是发动机回火的原因的是（）。
A.汽油泵与气缸体间衬垫过厚
B.汽油泵摇臂和凸轮轴凸轮靠得过近或过远
C.进气歧管衬垫损坏
D.排气歧管衬垫损坏
[单项选择]What is implied but not stated by the author is that __________.
A. breakfast does not affect performance
B. Dr. Pollitt is engaged in research work at an institution of higher learning
C. not eating breakfast might affect the health of children
D. Professor Bender once taught college courses in nutrition in London
