热门试题:
[单项选择]
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Every year
television stations receive hundreds of complaints about the loudness of
advertisements. However, federal rules forbid the practice of making ads louder
than the programming. In addition, television stations always operate at the
highest sound level allowed for reasons of efficiency. According to one NBC
executive, no difference exists in the peak sound level of ads and programming.
Given this information, why do commercials sound so loud
The sensation of sound involves a variety of factors in addition to its
peak level. Advertisers are skilful at creating the impression of loudness
through their expert use of such factors. One major contributor to the perceived
loudness of commercials is that much less variation in sound level occurs during
a commercial. In regular programming the intensity of sound varies over a large
range. However, sound levels in commercials tend to stay at or near peak
A. the human voices in commercials have more auditory impact
B. people like cheerful songs that change dramatically in sound quality
C. high-frequency sounds are used to mask sounds that drown out the primary message
D. they possess sound qualities that make the viewer feel that something unusual is happening
[判断题]车轮踏面圆周磨耗也能影响车钩高度。
A.正确
B.错误
[判断题]在均匀电场中和稍不均匀电场中,起始电压和击穿电压不一样。( )
A.正确
B.错误
[单选题]当钢丝束两端均采用墩头锚具时,同一束中各根钢丝长度的极差不应大于钢丝长度的1/5000,且不应大于()mm。当成组张拉长度不大于10m的钢丝时,同组钢丝长度的极差不得大于()mm。
A.2、2
B.2、5
C.5、2
D.5、5
[单选题]放线、紧线与撤线工作均应( ),并做到通信畅通,做好监护。
A.多人指挥、多种信号
B.专人指挥、多种信号
C.多人指挥、统一信号
D.专人指挥、统一信号
[判断题]批次内所有采购计划按照统一时间节点同步组织实施。
A.正确
B.错误
[多选题]对电路中的描述正确的有( )。
A.电路中具有两个端钮,且流过同一个电流的一段电路称为支路
B.三条或三条以上支路的连接点称为节点
C.电路中由若干条支路组成的闭路路径称为回路
D.内部不包含其他支路的回路称为网孔
[判断题]拉跌落式熔断器、隔离开关(刀闸),应先拉开两边相,后拉开中相。合跌落式熔断器、隔离开关(刀闸)的顺序与此相反。
A.正确
B.错误
[单项选择]
The traditional model for systems development was that an IT department used (1) which is a process-centered technique, and consulted users only when their input or approval was needed. Compared with traditional methods, many companies find that JAD allows (2) to participate effectively in the requirements modeling process. When properly used, JAD can result in a more accurate statement of system requirements, a beret understanding of common goals, and a stronger commitment to the success of the new system. RAD is a (3) technique that speeds up information systems development and produces a functioning information system. While the end product of JAD is a(an) (4), the end product of RAD is the new information system. The RAD model consists of tour phases. During the (5), users interact with systems analysts and develop models and prototypes that represent all system processes, outputs, and inputs.
(3)处填()。
A. team-based
B. process-based
C. based on data
D. model-based
[单选题]呼和浩特局集团公司公布的管内垃圾投放站有( )。
A.海彦呼都格
B.贲红
C.锡林浩特
D.桑根达来
[判断题]对于需向司机发布的调度命令,列车调度员、车站值班员均可使用调度命令无线传送系统或列车无线调度通信设备向司机发布或转达。J231
A.正确
B.错误
[单选题]黄曲霉毒素污染最严重的食品是()
A.大米
B.小麦
C.高粱
D.发酵食品
E.花生
[多选题]钢轨的伤损主要有钢轨磨耗.剥落掉块.核伤.( )等。
A.A.裂纹
B.B.轨面擦伤
C.C.锈蚀
D.D.钢轨折断
[单项选择]
(一)
甲公司2010年在物资采购中,有关票据方面发生如下情况:
(1)甲公司销售给乙公司一批货物,按合同约定如期交货,乙公司签发了一张金额为30万元的转账支票,交给甲公司。甲公司到银行提示付款时,发现该支票是空头支票。甲公司认为,对乙公司应处以罚款,并有权要求乙公司给予经济赔偿。
(2)甲公司某采购人员持该公司开户银行签发的、注明“现金”字样的银行本票,购置一批物资。由于该采购人员保管不慎,将银行本票丢失。随后,甲公司采取了一系列的措施。
甲公司可以获得的赔偿数额是( )元。
A. 1000
B. 6000
C. 10000
D. 15000
[单项选择]汽蒸原料时加水量要()。
A. 一次性加够水
B. 勤加水
C. 多加水
D. 少加水
[判断题]一调越区作业时,调车长指派连结员根据调车作业计划检查作业股道车数及是否停妥(检查时走两线路中间,严禁进入线路作业或行走并注意邻线的机车、车辆动态),连结员确认作业股道车数达到计划挂车辆数且停妥后向调车长汇报,调车长得到连结员的汇报后向峰尾作业员联系越区作业,峰尾作业员与驼峰作业员(值班员)办理越区手续,取得驼峰作业员(值班员)同意后,方准越区作业。
A.正确
B.错误
[单项选择]Political controversy(争论)about the public-land policy of the United States began with the American Revolution. In fact, even before independence from Britain was won, it became clear that resolving the dilemmas(困境)surrounding the public domain might prove necessary to preserve the Union itself.
At the peace negotiations with Britain, Americans demanded, and got a western boundary at the Mississippi River. Thus the new nation secured for its birthright a vast internal empire rich in agricultural and mineral resources. But under their colonial charters(契约),seven states—Massachusetts, Connecticut, New York, Virginia, North Carolina, South Carolina, and Georgia—claimed portions of the western wilderness. Virginia’s claim was the largest, stretching north and west to encompass the later states of Kentucky, Ohio, Indiana, Illinois, Michigan and Wisconsin. The language of the charters was vague and their validity questionable, but during the war Virginia reinforced its title by sponsorin
A. A controversial public-land policy.
B. How independence from Britain was won.
C. The land holdings of Massachusetts.
D. How New Jersey developed its western land.
[单项选择]如果需要匹配包含文本的元素,用下面哪种来实现()
A. text
B. contains
C. input
D. attr(namE.
[单项选择]下列属于中国人民银行反洗钱职责的是()。
A. 监督、检查金融机构履行反洗钱义务的情况
B. 参与制定所监督管理的金融机构的反洗钱规章
C. 建立国家反洗钱数据库
D. 发现涉嫌洗钱犯罪的交易活动及时向公安机关报告
[判断题]法人资金查询分析系统进行账户资金交易明细查询时,只能查询到最近一个月内的数据。
A.正确
B.错误
[填空题]交感神经的低级中枢位于_______( )至腰3( )节段的灰质侧角内 )_____。
[单选题]下列不符合出租汽车驾驶员服务用语要求的是()。
A.A.提倡使用 普通话
B.B.根据乘客 需要使用地方 方言
C.C.提倡掌握 外语接待外国 乘客
D.D.无论乘客 是否能听懂, 使用常说的本 地方言
[单项选择]冰和空气饱和水的平衡温度称()。
A. 冰点
B. 沸点
C. 凝固点
[填空题]休克可分为()、()、()、()和()五类。
[单选题]( )由外勤助理值班员确认列车具备发车条件后,使用发车手信号发车,同时使用列车无线调度通信设备通知司机确认发车手信号。
A.旅客列车
B.货物列车
C.军用列车
D.路用列车
[单项选择]去极化肌松药琥珀胆碱其作用时间为
A. 2~8分
B. 20分
C. 40分
D. 60分
E. 90分
[判断题]在电力系统中设置消弧线圈,应尽量装在电网的送电端,以减少当电网内发生故障时消弧线圈被切除的可能性。()
A.正确
B.错误
[多选题]( )发生因“制动关门车”需要限速运行时,车辆乘务员须向机车司机递交《旅客列车制动关门限速证明书》。XG37
A.旅客列车
B.动车组以外的旅客列车
C.快速货物班列
D.特快货物班列
[单选题]在变压器内部发生故障(如绝缘击穿、相间短路、匝间短路、铁芯事故等)产生( )时,接通信号或跳闸回路,进行报警或跳闸,以保护变压器。
A.气体
B.液体
C.固体
[单选题](466077)双波长分光光度计使用( )光源,经单色器获得不同波长。(1.0分)
A.一个
B.两个
C.三个
D.四个
[单项选择]长方体的水平投影图中,不能反映长方体的( )
A. 高度
B. 宽度
C. 长度
D. 宽度和长度
[单选题]安全工器具宜存放在温度为-15℃~+35℃、相对湿度为( )、干燥通风的安全工器具室内。
A.80%以下
B.80%以上
C.90%以下
D.70%以下
[单项选择]通过图像增强,可提高图像的()
A. 可解译性
B. 分辨率
C. 几何保真度
D. 辐射水准保真度
[单项选择]
A. blanketed
B. swept
C. covered
D. spread