热门试题:
[单选题]避免肾结石增大的最有效方法是()
A.口服VitB
B.控制饮食中蛋白质含量
C.大量饮水
D.多活动
[多选题]硬性输尿管属于哪种分类
A.硬性内窥镜
B.半软性内窥镜
C.软性内窥镜
D.光学镜
E.纤维镜
[多选题]以下关于估值方法的描述,符合市价法估值的是( )
A.产品净值真实反映市场波动
B.稳定性差
C.净值波动平滑
D.易出现短期浮亏
[单项选择]脐带缠绕最常见的是()
A. 躯干
B. 上肢
C. 手与足
D. 绕颈部
E. 下肢
[判断题]铁路一般事故分为:ABCD 四类。
A.正确
B.错误
[多选题]作业人员有权()。
A.更改施工方案
B.拒绝违章指挥
C.移动或拆除接地线
D.拒绝强令冒险作业
E.略
F.略
[单项选择]锅炉各零部件安装完毕,打压合格后,即可开始()。
A. 煮炉
B. 启炉
C. 整定安全阀
[单项选择]《十五贯》中苏州府梦见野人衔鼠,其中之“鼠”一指老鼠,另一指()。
A. 田鼠
B. 娄阿鼠
C. 锦毛鼠
D. 穿山鼠
[简答题]阅读下列说明,回答问题1至问题3,将解答填入答题纸的对应栏内
[说明]某快递公司对每个发出的快递进行跟踪管理,需要建立一个快递跟踪管理系统,对该公司承接的快递业务进行有效管理。
[需求描述]
1.公司在每个城市的每个街道都设有快递站点。这些站点负责快递的接收和投递。站点信息包括站点地址、站点名称、责任人、一部联系电话、开始营业时间、结束营业时间。每个站点每天的营业时间相同。每个站点只能有一个责任人。
2.系统内需记录快递员、发件人的基本信息。这些信息包括姓名、身份证号、- 个联系地址、-部联系电话。快递站点的责任人由快递员兼任,且每个快递站点只有一个责任人。每个快递员只负责一个快递站点的揽件和快递派送业务。发件人和快递员需实名认证。
3.快递需要提供详实的信息,包括发件人姓名、身份证号、部发件人电话号码、 发件人地址、收件站点、收件人姓名、收件地址、一部收件人电话、 投递时间、物品类别、物品名称及物品价值。每个发件人和收件人在系统里只能登记个电话和地址。
4.每个快递员接手一份快递后,需在系统中录入每个快递的当前状态信息,包括当前位置、收到时间、当前快递员和上一段快递员。状态信息包括待揽件、投递中、已签收。如果快递已签收,应记录签收人姓名及一个联系电话。每个快递在一个站点只能对应一个负责的快递员。注:试题不需要考虑快递退回的相关问题。
[逻辑结构设计]根据上述需求,设计出如下关系模式:快递(快递编号,收件人姓名,收件地址编号,收件人电话,投递时间,物品类别,物品名称,物品价值),其中收件地址编号是地址实体的地址编号。快递员(姓名,身份证号,电话号码,联系地址编号,工作站点编号)快递站点(站点编号,站点名称,责任人编号,站点地址编号,开始营业时间,联系电话,结束营业时间)。责任人编号是负责该站点的快递员的身份证号。地址(地址编号,所在省,所在市,所在街道,其他), 其他信息是需补充的地址信息。快递投递(快递编号,快递员编号,发件人姓名,发件人身份证号,发件人电话号码,发件人地址编号),其中发件人地址编号为发件人地址的地址编号,揽件站点编号为接收该快递的站点编号。快递跟踪(快递编号,当前快递员编号,上一 段快递 员编号,当前状态,收到时间,当前站点编号)。快递签收(快递编号,签收人姓名,签收人联系电话)。根据以上描述,回答下列问题:
[问题1] (6分)对关系“快递投递”,请回答以下问题:(1)列举出所有候选键。(2)它是否为3NF,用100字以内文字简要叙述理由。(3)将其分解为BCNF,分解后的关系名依次为:快递投递1,快递投递2,.并用下划线标示分解后各关系模式的主键。
[问题2] (6分)对关系“快递跟踪”,请回答以下问题:(1)列举出所有候选键。(2)它是否为2NF,用100字以内文字简要叙述理由。(3)将其分解为BCNF,分解后的关系名依次为:快递跟踪1,快递跟踪2, ..并用下划线标示分解后各关系模式的主键。
[问题3] (3分)快递公司会根据快递物品和距离收取快递费,每件快递需由发件人或收件人支付快递费给公司。同一个发件人同时发起多个快递,必须分别支付。快递公司提供预支付和到付两种支付方式。为了统计快递费的支付情况(详细金额和时间),试增加“快递费支付”关系模式,用100字以内文字简要叙述解决方案。
[单选题]电力企业职工违反规章制度、违章调度或者不服从调度指令,造成重大事故的,比照刑法第一百一十四条的规定追究民事责任。
A.A:对。
B.B:错。
C.略
D.略
E.略
F.略
[单项选择]A man in a restaurant was giving the waiter a lot of trouble. First, he felt it too hot, so he asked the waiter: "Excuse me, could you turn on the air conditioner (空调) It’s too hot here that I can’t bear any more!" Then a few minutes later he asked the waiter again: "Excuse me! Now it’s too cold! Would you turn it off!" Several minutes later he felt hot again, and he let the waiter come and asked him to turn on the air conditioner again. This went on for about half an hour.
However, although the customer was so annoying, the waiter was very kind. He did everything the man asked without getting angry. Finally, someone else in the restaurant could no longer bear it. He couldn’t help asking why the waiter didn’t just throw the annoying man out.
And you know what the waiter said
The waiter said, smiling: "Oh, I don’t care because we don’t even have an air conditioner./
Because the customer was ill, he felt sometimes hot and sometimes cold.
A. Right.
B. Wrong.
C. Doesn’t say.
[单项选择]若喘甚不得卧者加
A. 茯苓、白术
B. 杏仁、桑白皮、厚朴
C. 桔梗、杏仁
D. 茯苓、生姜
E. 前胡、桔梗
[单项选择]在质量缺陷处理完毕后,监理工程师应组织有关人员对处理的结果进行严格的检查鉴定和验收,写出(),提交业主或建设单位,并上报有关主管部门。
A. 事故原因分析报告
B. 质量问题处理报告
C. 质量事故调查报告
D. 质量事故处理建议书
[单选题]医嘱必须由本医疗机构拥有()开具方可执行
A.医师资格证和处方权的医师
B.医师执业证和处方权的医师
C.医师资格证、执业证、处方权的医师
D.医师执业证的医师
E.医师资格证的医师
[判断题]增强对于生产中的人的关注,约束人的不安全行为可以中断导致事故的最后一节导火索,降低事故发生的概率。
A.正确
B.错误
[单选题]露天浅孔爆破后余爆破器材应()。
A.收集上缴,集中销毁
B.当班回收,下班再用
C.个人回收,自行处理
[单选题]每个防火区应至少设置( )个手动火灾报警按钮。
A.4
B.3
C.2
D.1
[单选题]角膜从前向后分为
A.角膜上皮、角膜基质、前界层、后界层、角膜内皮
B.角膜内皮、角膜基质、前界层、后界层、角膜上皮
C.角膜上皮、前界层、角膜基质、后界层、角膜内皮
D.角膜上皮、后界层、角膜基质、前界层、角膜内皮
E.角膜上皮、前界层、后界层、角膜基质、角膜内皮
[单选题]省煤器入口处受热面管段定期割管检查,主要检查( 通密度的单位名称)变形。
A.管子壁厚
B.管子的剩余寿命
C.管内壁氧腐蚀情况
D.工作温度下的持久强度
[多选题]以下设备中,与计算机网络有关的有( )。
A.调制解调器
B.显示卡
C.网卡
D.声卡
[判断题]收费公路经营管理单位应在入、出口收费站通过设立标志标识等措施,应到车辆到指定车道或地点进行登记或接受查验。 ( )
A.正确
B.错误
[判断题]阴、阳离子交换树脂在运行中常有铁污染问题,两者所受污染程度大致相同。()
[多选题]国务院征信业监督管理部门及其派出机构对征信业机构进行现场检查和调查时,被检查、调查的单位和个人应当配合,如实提供有关文件、资料,不得()。
A.延时
B.隐瞒
C.拒绝
D.阻碍
E.配合
[单选题]四功分器的分配损耗是dB。
A.3.5
B.4.8
C.6
D.8
[单选题]______ is reported in the newspapers, talks between the two countries are making progress.
A.It
B.As
C.That
D.What
[单项选择]不同的颜色模式可以使用Photoshop自带滤镜的情况也各不相同,下列正确的是()
A. 灰度模式下所有的滤镜都可以使用,索引模式下所有的滤镜都不可以使用
B. CMYK模式下所有的滤镜都可以使用,位图模式下所有的滤镜都不可以使用
C. RGB模式下所有的滤镜都可以使用,索引模式下所有的滤镜都不可以使用
D. 双色调模式下所有的滤镜都可以使用,多通道模式下所有的滤镜都不可以使用
[单选题]确诊最有价值的检查是
A.头颅CT或MRI检查
B.腰穿脑脊液检查
C.脑血管造影检查
D.脑电图检查
E.肌电图检查
[简答题]《铁路旅客运输服务质量规范》(铁总运〔2016〕247号)规定:基础管理:按规定配置<--NRC-->,内容修改及时、正确。
[多选题]配电线路在巡视沿线情况时,防护区内不应有( )。
A.易燃易爆物
B.土建施工
C.脚手架
D.植树造林
[单选题]变压器额定容量的单位为()。
A.A、kV
B.B、KW
C.C、R
D.D、KΩ
[多选题]列控中心通过和CTC通信接口向CTC设备传输( )等信息。
A.区间闭塞分区状态
B.编码
C.方向
D.设备状态
[不定项选择题]共用题干
第三篇
The Age of being Bullied and Its Effect
The age at which kids first fall victim to bullying(欺辱)could influence how strongly they are affected,suggests a new study.And,surprisingly,it is not the youngest kids who are hurt the most in the long term. Bullying can have long-lasting effects,but particularly when it begins in adolescence(青春期),the researchers say.
People subjected to either oral or physical bullying are known to be at greater risk for developing depression,anxiety disorders or to behave violently.But not everyone reacts in this way.Children bullied for the first time before their adolescence seem to get over it,but those who are victimized for the first time late on in adolescence seem to become more aggressive or are more likely to turn to drink as a means of coping. These are the conclusions of psychologist Matthew Newman and his colleagues from the University of Texas at Austin,U.S.
The team gave questionnaires to nearly 1,500 college students regarding their experience of physical and psychological bullying before adolescence一before high school一and in late adolescence一at high school.They assessed mood and mental state,judging by signs of anxiety or depression,such as sleeplessness.The group was also questioned about how they would react to certain challenges,such as being embarrassed or provoked.
People who were bullied all revealed slightly higher levels of stress.But while those bullied earlier in life seemed to respond normally to provocation,people bullied for the first time late in adolescence are more withdrawn and sensitive to violence.
The best solution was strong social support,whether from friends,family or school.Those with no one to share their problems were suffered the most.
So perhaps it is best not to shelter children completely from bullying early on,suggests Newman."They may get stressed,but unhealthy coping really jumps out when they are bullied for the first time later on."The effects are likely to be related to the developing stress hormone system, which matures during adolescence,he concludes.Studies show abnormal stress responses in adult animals that experience social stress or aggression from other animals during adolescence.
According to the study,the college students who were first bullied before adolescence would_______.
A.forget about the bullying
B.reveal some level of stress
C.face challenges bravely
D.seldom provoke others
[多选题]价值规律发挥作用的表现形式有( )。
A.价格围绕价值上下波动
B.价格围绕交换价值上下波动
C.价格围绕成本价格上下波动
D.市场价格围绕生产价格上下波动
[单选题]县级公安机关每年至少召开 全体大会或者公安民警代表会议,及时总结工作、表彰先进、部署任务。( )
A.一次
B.两次
C.三次
D.四次