热门试题:
[单选题]压力供水是指利用______将水从水箱输送到各用水点。
A.吸力
B.水泵
C.引力
D.重力
[单项选择]
Most American magazines and newspapers reserve 60 percent of their pages for ads. The New York Times Sunday edition (1) may contain 350 pages of advertisements. Some radio stations devote 40 minutes of every hour to (2) .
Then there is television. According to one estimate, American youngsters sit (3) three hours of television commercials each week. By the time they graduate from high school, they will have been (4) 360,000 TV ads. Televisions advertise in airports, hospital waiting rooms, and schools.
Major sporting (5) are now major advertising events. Racing cars serve as high speed (6) Some athletes receive most of their money from advertisers. One (7) basketball player earned $ 3.9 million by playing ball. Advertisers paid him nine times that much to (8) their products.
There is no escape. Commercial ads are displayed on wails, buses, and trucks. They decorate the inside of taxis a
A. commerce
B. consumers
C. commercials
D. commodities
[单项选择]以下因素有利于维系生态系统平衡的是（）
A. 物种丰富
B. 自然界发生异常变化
C. 控制工业"三废"
D. 控制农药的使用和管理
E. 环境的自净作用
[单项选择]何谓大量咯血（）
A. 日咯血量>100ml
B. 日咯血量>200ml
C. 一次咯血量>100ml
D. 一次咯血量>200ml
E. 一次咯血量>300ml
[单项选择]某管路流动的Re=106，通水多年后，由于管路锈蚀，发现在水头损失相同的条件下，流量减少了一半。假设新管时管内流动处于光滑区，可采用布拉修斯公式计算；锈蚀后管内流动处于粗糙区，可采用希弗林松公式计算，那么旧管管壁的相对粗糙高度ks/d约为（）。
A. 0.012
B. 0.141
C. 0.082
D. 0.018
[填空题]实现信息的传输和处理的电路称为（）电路。
[单项选择]卤最常用的原料是______、家畜及其内脏。
A. 蔬菜
B. 鸭子
C. 鸡
D. 家禽
[单项选择]痰浊壅塞型胸痹的症状特点是
A. 胸部刺痛，固定不移
B. 胸痛彻背，感寒痛甚
C. 心痛彻背，背痛彻心，痛剧而无休止
D. 胸闷如窒而痛，肢体沉重
E. 胸闷隐痛，时作时止
[单选题].轴承组装工作间的温度不低于( )℃。
A.5.
B.10.
C.15.
D.20.
[单选题]贺某因盗窃被逮捕，公安机关在法定的2个月的侦查羁押期限内没有对案件侦查终结，本案又不存在延长羁押期限的法定情形，公安机关应当（）。
A.对贺某予以释放，需要继续查证的，可以对贺某取保候审或者监视居住
B.找理由申请延长期限，以免超期办案
C.重新向人民检察院申请批准逮捕
D.建议人民检察院对贺某作出不起诉的决定
[简答题]一男子驾车闯红灯被警察拦住，警察查明驾车人因要将其突发疾病的邻居送往医院抢救而闯红灯。对此行为之性质与法律责任，两警察持不同意见，警察甲认为任何情况下违反交通规则均应受到法律的制裁，而警察乙则认为驾车人为抢救病人，违反规则实出于不得已，因而不应受处罚。请对两警察在法律推理方式上的区别作出分析。
[判断题]应急处置的“十六字”方针:停车开门.疏散乘客.断电断气.灭火报警。()
A.正确
B.错误
[单项选择]根据城镇土地使用税法律制度的规定，城镇土地使用税的计税依据是（）。
A. 纳税人实际用于经营活动的土地面积
B. 纳税人实际有效利用的土地面积
C. 纳税人实际占用的土地面积
D. 税务机关认定的建筑面积
[单选题]下列哪些电力设施必须设立永久性标志
A.地下电力电缆所在位置
B.电力线路上的变压器平台
C.车辆、机械频繁穿越架空线路的地段
D.电力施工设施上
[判断题]混合云是指企业建立自己的私有云，同时使用公有云的资源
A.正确
B.错误
[单项选择]Coffee can be considered one of nature’s greatest gifts. It gives mental and emotional (67) without harmful side effects, and it (68) a wealth of nutrients. Yet, when most people drink coffee, they are not thinking that the beverage is (69) their health. In fact, some may even feel a little guilty, (70) some believe coffee isn’t good for you at all.
Well, coffee, like anything else, can cause problems if too much is (71) . Moderate consumption of coffee (72) your body with a wealth of antioxidants. These substances are responsible (73) eliminating free radicals. They are the chemical byproducts produced any time your body does something. A small numi6er of them can help serve (74) a buffer against negative elements, if they aren’t (75) in check, they can cause health problems. Antioxidants ensure that this doesn’t happen.
The psychological effects of caffeine cannot be (76) either. Not only does caffeine ma
[简答题]出自孟浩然的诗《临洞庭湖赠张丞相》中“气蒸云梦泽”下一句是什么？
[判断题]动火作业超过有效期，原动火工作票由动火工作票签发人审核后可继续使用。
A.正确
B.错误
[单选题]VPLS如果避免二层环路？
A.使用生成树协议
B.使用特定数据报文检测环路
C.组网时不能组成环网
D.水平分割机制
[判断题]做好管路防腐工作和防护工作主要指管路内部防腐。
A.正确
B.错误
[单选题]对决策概念的理解应包含( )方面的内容。( )
A.决策是为了达到既定的目的
B.要有两个或两个以上的方案,才会产生选择的问题
C.决策是一个过程,有一定的程序和规则
D.以上三者的综合
[判断题]2.56 持有大型客车、牵引车、城市公交车、中型客车、大型货车驾驶证的驾驶人,在记分周期内有记分的,应当在记分周期结束后三十日内到公安机关交通管理部门接受审验。
A.正确
B.错误
[单选题]进入压缩气体泄漏区域关阀堵漏时，必须落实( )保护措施。
A.防爆
B.防毒
C.防冻
D.防寒
[多项选择]资产负债表中的预付账款项目应根据（）填列。
A. 预付账款所属明细账贷方余额合计
B. 预付账款所属明细账借方余额合计
C. 预付账款总帐余额
D. 应付账款所属明细帐借方余额合计
E. 应付账款所属明细帐贷方余额合计
[判断题] 车站.列车(包括本站段各售票口及班组)使用的铁路客货运输票据,根据需要可以临时相互调拨和借用。( )
A.正确
B.错误
[判断题]几个作业组同时作业，当作业结束时，每个作业组须同时向供电调度申请消除停电作业命令。
A.正确
B.错误
[单选题]如果您在创建Linux操作系统的云服务器ECS实例的同时选择增加了数据盘,以下关于系统盘和数据盘的说法中错误的是：
A.云服务器支持对数据盘进行二次分区
B.如果您使用第三方工具对系统盘进行二次分区操作,不会发生什么异常
C.可以根据业务需要,对数据盘进行多分区配置
D.系统需要先格式化数据盘,然后挂载数据盘
[判断题]()特殊性能钢是具有特殊物理化学性能的钢6可分为不锈钢、耐热钢、耐磨钢等
A.正确
B.错误
[多选题]沼气是我国农村地区积极推广的新能源之一。就沼气开发利用与气候条件的关系，下列叙述不正确的是（ ）。
A.北方比南方日照强，利用沼气时间长
B.北方冬季晴天较多，沼气产气量较大
C.南方夏季降水较多，沼气产气量较小
D.南方比北方气温高，开发利用条件好
[多项选择]使用滋阴法时因注意
A. 邪热亢盛不可滥用滋阴法
B. 大便秘结、口燥、舌红而干不可使用滋阴法
C. 湿热留恋之证，应慎用滋阴法
D. 病人下焦一般不宜用滋阴法
E. 温病后期不宜用滋阴法
[单项选择] Galen, Andress Veaslius, and William Harvey were important figures in the history of man’’ s study of his own body. Galen, a Greek who practiced medicine in Rome in the second century A.D. , contributed immeasurably to the understanding of anatomy (解剖学). His dissections (解剖) were limited to Barbary apes, however, because Roman religious and philosophical attitudes made experimentation on the human body unthinkable. Even so, his reputation was so outstanding and his conclusions were so logical that his writings on anatomy and physiology were accepted by medical men for more than a thousand years.
Vesalius, a Belgian who went to Paris to study medicine, made the first major successful challenge of the teachings and the theories of Galen. Vesalius shocked his professors by proposing that knowledge of human anatomy should be learned from human bodies. No one took him seriously because there was a French law prohibiting dissection of the human body. Vesalius, nevertheless, conducte
A. He ran the risk of being put in prison by doing research on human bodies.
B. He thought he could get good medical training in Paris.
C. He was very popular with his professors.
D. He recognized the limitations of Galen’ s work.
[单选题]调车作业要准确掌握速度，接近被连挂的车辆时，不准超过（ ）km/h。
A.3
B.5
C.10
[单选题] 处置易燃可燃液体泄漏事故处置时，抢险人员一定要专业、精干，并严格按照（）级防护等级进行个人防护。( )
A. 一、二
B. 二
C. 三
D. 二、三
[判断题]我国正弦交流电的频率为50Hz。 ----
A.正确
B.错误
