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[不定项选择题]假设某铁路局A-B线路的高铁票价格从300元提高到400元,旅客需求数量从680下降到650。 下列关于交叉弹性的说法,正确的有(  )。
A.不同运输方式之间存在交叉弹性
B.相同运输方式的不同竞争者之间不存在交叉弹性
C.交叉弹性系数=A运输方式需求量变动/B运输方式运价变动
D.交叉弹性系数=A运输方式需求量变动率/B运输方式运价变动率

热门试题:

[单选题]高速公路车辆事故救援时,如开放部分车道,则最多开放(  )条车道,并应由交警在车道入口处指挥。
A.1
B.2
C.3
D.不限
[单选题]FX2N系列可编程序控制器中回路并联连接用( )指令。
A.AND
B.ANI
C.ANB
D.ORB
[单项选择]Which of the following is the MOST important step in preparing for disaster recovery?()
A.  Test the disaster recovery plan process
B.  Identify key disaster recovery personnel
C.  Ensure that all backup data is kept off-site
D.  Assist management with IT backup policy decisions
[判断题]为人民服务作为社会主义道德建设的核心,是社会主义道德区别和优越于其他社会形态道德的显著标志。( )
A.正确
B.错误
[单项选择]

Section B

一Does Jane still pursue her dream of becoming a movie star
一I’m afraid not.She is said( ) the stage already as she got married.
A. to have left
B. to leave
C. to have been left
D. to be left
[单项选择]下列哪项与子宫肌瘤无关?()
A. 黄体囊肿
B. 子宫内膜增生过长
C. 子宫肉瘤
D. 绝经后体积缩小
E. 红色变性
[单选题]梨状隐窝位于
A.喉腔
B.喉咽部
C.口咽部
D.鼻咽部
[判断题]《新疆油田井下作业井控实施细则》规定:周围有汽窜干扰(或同平台)的稠油井注汽.焖井时,不允许施工。( ) (五类) (七类)
A.正确
B.错误
[不定项选择题]风险管理效益的大小,取决于是否能以最小成本取得最大安全保障,同时在实务中还要考虑风险管理和整体目标是否一致,是否具有( )。
A.可行性
B.可操作性
C.有效性
D.普遍性
E.简便性
[单项选择]前磨牙支托的宽度为( )。
A. 其颊舌径1/2
B. 其颊舌径1/3
C. 其颊舌径1/4
D. 其近远中径的1/5
E. 其近远中径的1/6
[判断题]通过测试应变来测试构件的应力值,所得应力值反映的对构件承受荷载范围内的平均应力值。
A.正确
B.错误
[多选题]37、看砌碹岔子施工图的步骤应是( )
A.A、看平面图
B.B、看断面图
C.C、看纵断面图
D.D、看全图
[简答题]HPLC与窄带载波通信的优势在哪里。
[单项选择]


A. according to
B. according
C. accord to
D. accorded
[单选题]《技规》第337条 车辆乘务员、客运乘务组等列车乘务人员发现下列危及行车和人身安全情形时,应使用( )停车:
A.轴温报警装置
B.紧急断电按钮
C.紧急制动阀(紧急制动装置)
D.人力制动机
[判断题]远程费控智能程序每小时自动电费结算。
A.正确
B.错误
[单项选择]()是国际上比较流行的一种融资租赁方式。
A. 转租赁
B. 回租租赁
C. 杠杆租赁
D. 直接租赁
[判断题]牢固树立安全发展、科学发展理念,加强电力安全监管体系建设,逐步理顺电力行业跨区域监管体制,明确行业监管、区域监管与地方监管职责,鼓励有条件的地区先行先试。()
A.正确
B.错误
[判断题]公司各级营销部门是业扩报装业务的归口管理部门。
A.正确
B.错误
[单选题]中西药联用会降低疗效的药组是
A.全鹿丸和格列本脲
B.灵芝片与苯巴比妥
C.四逆汤与地高辛
D.小青龙汤与氨茶碱
E.丹参注射剂与多巴胺
[单项选择]房地产经纪人协理享有的权利是()。
A. 加入房地产经纪机构
B. 设立房地产经纪机构
C. 订立房地产经纪合同
D. 指导房地产经纪人进行各种经纪业务
[单项选择]腹内脏器损伤的特征性临床表现是()
A. 腹痛、恶心呕吐、休克
B. 腹痛、休克、腹膜刺激征
C. 腹痛、腹膜刺激征、呕吐
D. 腹痛、腹胀、无肛门排气排便
E. 腹痛、休克、腹胀
[单选题]在施工期间无论是建设单位、设计单位或施工单位提出,需要进行局部设计变更的内容,都必须按照规定的程序,先将变更意图或请求报送( )审查,经设计单位审核认可并签发《设计变更通知书》后,再由其下达《变更指令》。
A.建设单位负责人
B.总包技术负责人
C.监理工程师
D.项目部技术负责人
[判断题] CRH2动车组两车辆间共有三类风挡,分别为:压缩式外风挡、气密式内风挡和防雪风档。
A.正确
B.错误
[单选题]各单位应定期组织安全危机事件应急预案的演练,增强生产安全事故等危机事件的抢险救援和处理危机事件的能力,每年演练不应少于()次。
A.1
B.2
C.3
D.4
[单选题]电气化铁路接触网停电检修时,禁止向( )放行电力机车及动车组。(应知应会-《电气化铁路有关人员电气安全规则》第19条)
A.停电区
B.作业区
C.封锁区间
D.封锁区段
[填空题]三态门电路的输出状态分别是();();()。
[单项选择]探采结合孔的深井孔深一般在()。
A. 50m以内
B. 100m左右
C. 100~300m
D. 300m以上
[单选题]研磨工件外圆柱面时,工件慢速转动,研磨环( )。
A.不动
B.反方向转动
C.不转动,只左右移动
D.没有规定,随便都行
[多选题]下列符合婚姻家庭道德的是( )
A.婚姻自主、互信互谅
B.养尊敬老人、抚养教育子女
C.邻里和睦团结
D.一夫一妻、平等互爱
[不定项选择题]资料:Britain is facing a “crisis of fatherlessness” in which almost half of all children born today will not be living with both parents by the time they are 15, the new chief executive of the thinktank founded by Iain Duncan Smith has warned. Andy Cook, who runs the Centre for Social Justice, which is chaired by the former cabinet minister, argued that regular contact with a father figure reduced criminal behavior in children and boosted cognitive skills including reasoning and language development. Cook claimed there was too much of a “throwaway culture” to parenting, adding: “Over the last 40 years, the meteoric rise in family breakdown has blighted (损害) the lives of the poorest children the most. The relationship children have with their fathers affects their self-esteem, how well they do at school, even whether they are able to form happy, long-lasting relationships as adults.” Cook said it was inevitable that relationships would not always work out, but argued that a culture shift could reduce the prevalence of family breakdown, and stressed the importance of parenting once couples had separated.“We need a societal shift in perspective from regarding fathers as a dispensable extra to recognizing their value as a crucial pillar in a child’s life.” he said. Cook argued policy ought to be focused on longer-term thinking, and emphasizing the potential impact on children of troubled relationships, stressing the disproportionate effect on the poorest. His thinktank’s figures show that by the age of five 48% of children in low-income families are not living with both parents, compared with 16% of children in middle-to higher-income families. He said his work would also focus on four other factors that contributed to poverty: educational failure, worklessness, problem debt and addiction. Looking only at income levels skewed policy, he added. Despite controversy in the education sector about the growth of grammar schools, Cook argued that there was evidence they could be successful if headteachers tried to find the most talented children from poorer families. The former chief executive of the Centre for Social Justice, Christian Guy, who became the PM's poverty adviser, said the hope of the previous strategy was to “start a parenting revolution——for too long politicians looked away as family instability and poor child development blighted lives in the poorest neighbourhoods”.“Parents want what's best for their children, but great advice tends to be the preserve of the better off. This has to change if we want to see children starting school ready to lead to communicate and forming healthy relationships”. It is widely believed that fathers______.
A.tend to overlook the importance of parenting
B.help to prevent children from committing a crime
C.are not indispensable in the growth of their children
D.improve kids’development of cognitive skills
[填空题]全面建设社会主义现代化国家,必须有一支()、()、()的干部队伍。
[单项选择]以下取穴哪项是错误的()
A. 胃火证取内庭
B. 咯血取孔最
C. 五更泄取然谷
D. 咽痛取鱼际
E. 目赤取太冲
[单选题]等电位作业人员在绝缘梯上作业或者沿绝缘梯进入强电场时,其与接地体和带电体两部分间隙所组成的组合间隙不准小于:330kV( )m 。
A.2.9
B.3
C.3.1
D.3.2
[判断题]在接触网带电的情况下进行电力线路检修时,工作人员的活动范围与接触网之间的安全距离不小于1米
A.正确
B.错误
[单项选择]能提供机械解剖结构的是
A. 结构移植
B. 同种异体移植
C. 异种移植
D. 活体移植
E. 同卵孪生移植
[判断题]国产沥青的含蜡量和软化点都较高

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