热门试题:
[填空题]《铁路旅客运输服务质量规范》（铁总运〔2016〕247号）规定：厨房前门悬挂印有“<--NRC-->”字样的挡帘。
[单项选择]( )可以作为中央银行进行公开市场操作，调节货币流通量的重要手段。
A. 短期国债
B. 中期国债
C. 长期国债
D. 中、长期国债
[单项选择]
Passage Two
As the competition for admission to Canada’s post-secondary institutions heats up, parents are searching for new ways to give their kids an edge (优势). Growing numbers are finding the solution in a long-standing educational method--boarding schools.
Canada’s almost 10,000 boarding school students are exposed to richer and more varied programming than the public system can offer. Moreover, their days axe quite structured and students are kept busy with academics, athletics (运动) and other activities. Many boarding schools develop specialties: for instance, Brentwood College School in Mill Bay, specializes in fine arts, while Athol Murray College Notre Dame in Wilcox, has nationally recognized hockey programs for boys and girls.
Susan Hazell, who spent more than 20 years teaching in Canadian boarding schools, says that boarding schools foster (培养，鼓励) independence in students.
"They provide a safe, positive environmen
A. A Long-standing Educational Method.
B. The Advantages of Boarding Schools.
C. Find a Suitable School for Your Child.
D. Give Your Kids a Good Education.
[单选题]312.推挽功率放大电路若不设置偏置电路，输出信号将会出现（）。
A.饱和失真
B.截止失真
C.交越失真
D.线性失真
[多选题]以下直流保护中不属于双极保护的是（____）。
A.A.极母线差动保护
B.极过流保护
C.阀组连接线差动保护
D.接地极线过流保护
[判断题] 列车运行图分为平日、双休日和节假日等列车运行图。 ( )
A.正确
B.错误
[单选题]下列关于高性能混凝土原材料储存中说法错误的是( )。
A.混凝土的配合比参数主要包括胶凝材料用量、矿物掺和料掺量、水胶比、含气量、氯离子含量、碱含量以及三氧化硫含量等。
B.混凝土的配合比参数可根据结构的成型方式、设计使用年限、环境类别及作用等级确定。
C.对C30以下等级混凝土,采用自密实成型时,混凝土的胶凝材料最大用量一般分别限制在550、600 kg/m3。
D.对C30~C45、C50~C60、C60以上等级混凝土,浆体比一般分别控制在32%、35%、38%以下。
[单选题]对于强酸、碱洗消器维护保养及注意事项表述不正确的是( )
A.使用之前不要用水洗。
B.超过规定时间,则需用大量的药液冲洗。
C.严禁阳光照射或放在60℃以上的地方。
[不定项选择题]A.Ⅳa期宫颈癌以下临床分期是
A.0期
B.Ⅰa期
C.Ⅲb期
D.Ⅱa期
E.宫颈癌延及盆壁，与盆壁无空隙
[单选题]犬细小病毒感染临床表现以急性出血性肠炎和________为特征。 ( )
A.非化脓性心肌炎
B.化脓性心肌炎
C.非化脓性肺炎
D.化脓性肺炎
[多选题]清洁生产的总体思路（3W原则）是（ ）。
A.废物从哪里产生的—污染源清单？（Where）
B.
为什么会产生废物—原因分析？(Why)
C.
如何消除产生的废物—方案产生和分析？（How）
[单项选择]车辆最合理的车体长度与车辆定距之比为（）。
A. 14：1
B. 1.4：1
C. 1：1.4
D. 1：14
[单项选择]职业道德是指人们在一定的（）范围内所遵守的行为规范的总和。
A. 日常生活
B. 运动
C. 生产活动
D. 职业活动
[单选题]进入有核辐射危险的区域，应着( )，并携带个人辐射剂量仪。
A. 防化服
B. 核沾染防护服
C. 隔热服
D. 避火服
[单项选择]在税制要素中，对纳税对象总额中的一部分数额免予征税，只就减除后的剩余部分计征税款，被免予征税的这部分数额是( )。
A. 抵免额
B. 免征额
C. 税基
D. 起征点
[判断题]一个工作负责人可以同时执行多张工作票，工作票上所列的工作地点，以一个电气连接部分为限。
A.正确
B.错误
[单项选择]从上午十点一刻到下午四点四十五分钟，共有多少时间？（）
A. 5小时30分钟
B. 7小时30分钟
C. 8小时30分钟
D. 6小时30分钟
[单项选择]
It’s generally agreed that the greatest threat facing the world today is the warming of the earth’s atmosphere, commonly called global warming or the greenhouse effect. But what is the cause of the greenhouse effect
We have been producing too many of the gases which, when they are released into the earth’s atmosphere, trap heat, and thus raise their temperatures. There are several gases involved, but the main ones are carbon dioxide (二氧化碳) and chlorofluorocarbons (氯氟甲烷)--often called CFCs. The carbon dioxide comes from burning forests and from bunting fossil fuels such as oil and coal. The CFCs are given off by refrigerators and air-conditioning systems. Carbon dioxide is to blame for 56% of the greenhouse effect, and CFCs for 23%.
The global warming we are experiencing now is only a result of the carbon dioxide and other gases we have dumped into the atmosphere up to the 1960s. In other words, the damage may have already been done. Tempe
A. the present environmental pollution
B. the poisonous gases produced 40 years ago
C. the development of industry
D. the wastes dumped by people
[单项选择]患者项背拘紧疼痛，活动不柔和，发热，恶寒，汗出，脉浮，治宜（）
A. 桂枝加葛根汤
B. 葛根汤
C. 麻黄加葛根汤
D. 麻黄汤
E. 桂枝汤
[单选题]直流电源系统( )支路中熔断器与直流断路器不应混用,尤其不应在直流断路器的( )使用熔断器。严禁直流回路使用交流断路器。
A.不同,上级
B.同一条,上级
C.不同,下级
D.同一条,下级
[多选题] 供用电合同的变更或者解除,必须依法进行。包括(____)情形。
A. 当事人双方经过协商同意,井且不因此损害国家利益和扰乱供用电秩序
B. 由于供电能力的变化或国家对电力供应与使用管理的政策调整,使订立供用电合同时的依据被修改或取消
C. 当事人一方依照法律程序确定确实无法履行合同
D. 由于不可抗力或一方当事人虽无过失,但无法防止的外因,致使合同无法履行
[单选题]火灾报警系统报警器的液晶屏的作用是( B ）。
A.制定事件记录原则
B.显示报警器的事件信息
C. 查询当前行车状况
D.显示车辆检修记录
[单选题]在楼梯间或管道竖井中,当室外温度低于室内温度时,烟雾随内外温差由建筑物底部扩散至到建筑物顶部,并形成一股强烈的上升气流,这种现象称为( )。
A. 烟囱效应
B. 升腾现象
C. 火风压
D. 热传导现象
[多选题]根据我国保险法律制度的规定，下列选项的表述中，正确的有（ ）。
A.保险代理人根据保险人的授权代为办理保险业务的行为，由保险人承担责任
B.保险的本质是保证危险不发生并使投保人、被保险人或受益人获得额外的利益
C.如果保险代理人存在表见代理的情形，保险人可以依法追究越权的保险代理人的责任
D.保险人应以自己的名义行使保险代位求偿权
[多选题]以下（）需安装风速仪。
A.室内工作的35m起升高度的桥式起重机
B.室外工作的55m起升高度的门式起重机
C.室外工作的起升高度30m的门式起重机
D.室外工作60m起升高度的履带起重机
[单选题] 防静电的接地电阻要求不大于( )Ω。
A. 10
B. 40
C. 100
[填空题]
Unlocking the Human Genome (基因组)
1．A．project to unlock secrets—what scientist could resist that challenge This is what many scientists are doing as they work on the Human Genome Project. The aim of the project is to decode (破译) all of the some 100,000 genes in the human body. Scientists are using DNA fingerprinting techniques to do the decoding.
2．DNA．is the substance found in the chromosomes (染色体) of a cell. A chromosome is a chain of genes. Each gene carries a piece of genetic information. At any one moment in a cell, thousands of genes are turned on and off to produce proteins (蛋白质). The challenge for scientists is to find out what role each gene plays in protein production. At some point this decoding will be complete. Then scientists will have a map of an ideal genome, or a picture of the total genetic nature of a human being. The ideal genome is called a consensus (交感) genome. Everything works well in a consensus genome.
[单项选择]肛提肌位于骨盆底的（）
A. 内层
B. 中层
C. 外层
D. 浅层
E. 深层
[单选题]捡到他人财物不归还（）。
A.只是道德层面的问题
B.涉嫌违法，拒不归还的可追究法律责任
C.无所谓
D.捡到的就是我的
[单项选择]How to start your life in the USA It’s very important to learn to use English well. But very often it isn’t easy to find someone to talk to in a big city. However, here are some suggestions.
(1)If you want to use English in the street, first, get or borrow a dog! Walk him several times a day!Americans love pets(宠物) and usually stop to talk to anyone with a dog.
(2)Then, try to eat in a restaurant. People sitting at the same table with you will sometimes talk to you if they see that you are a foreigner.
(3) Always ask for information from a woman if you are a man, and from a man if you are a woman! This often works very well though I don’t know why.
(4)Learn to say "Please", "Thank you" and "You’re welcome" before you come to the USA and use them all the time! Always say "Fine" in answer to the question "How are you".
(5)Also, when someone says he/she will meet you at six o’clock, be sure to be there by six. Americans think highly of time and expect everyone to
[单选题]遥控无人机着陆时,下列哪种情况,收油门的时机应适当提前,收油门的动作适当加快( )
A.顺风较大
B.逆风较大
C.无风情况
[判断题]为了保证通信畅通和设备长期运行,与开关电源系统有关的整流器、交流供电、电池及发电机的配置要合理。( ) (难)(消防通信网络设备)
A.正确
B.错误
[填空题]正粒级层理的特点是在一岩层中，从底到顶粒度（）。
