[单选题]整流器一般使用( )个二极管。-我要搜题网

[判断题]电势是单位负电荷在电场中某一点所具有的势能。（）

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[多选题]下列观点中包含实践对认识的决定作用原理的是()。
A.没有调查就没有发言权
B.百闻不如一见，百见不如一干
C.不登高山，不知天之高也；不临深溪，不知地之厚也
D.机遇偏爱有准备的头脑

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[判断题]26V注液机注液量为5.0+0.1g( )
A.正确
B.错误

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[单选题]抗甲状腺药物分为( )
A.咪唑类和磺脲类
B.咪唑类和硫脲类
C.咪唑类和碘制剂
D.磺脲类和双胍类
E.磺脲类和硫脲类

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[单选题]HXD3电力机车制动控制司机控制器手柄为（）级，级间能平滑调节。
A.10
B.12
C.13

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[单选题]设有转动套的车钩为( )。
A.16、17型
B.13A、17型
C. 13A型
D. 16型

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[单选题]车站接到列车超员电报后，客运值班主任（值班员）应立即采取措施停止发售该次列车（），通知检票口停检该次列车。
A.硬座车票
B.无座席车票
C.软座车票
D.卧铺车票

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[单选题]动力电池漏电检测判定不漏电的标准是：等于或高于（）被认为是不漏电。
A.100Ω/V
B.500Ω/V
C.1000Ω/V
D.2000Ω/V

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[不定项选择题]共用题干 1.If you want to stay young,sit down and have a good think.This is the research finding of a team of Japanese doctors,who say that most of our brains are not getting enough exercise一and as a result,we are ageing unnecessarily soon.
2.Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age,and how the process of ageing could be slowed down.
3.With a team of colleagues at Tokyo National University,he set about measuring brain yolumes of a thousand people of different ages and varying occupations.
4.Computer technology enabled the researchers to obtain precise measurements of the volume of the front and side sections of the brain, which relate to intellect（智能）and emotion, and determine the human character. The rear section of the brain,which controls functions like eating and breathing,does not contract with age,and one can continue living without intellectual or emotional faculties.
5.Contraction of front and side parts一as cells die off —was observed in some subjects in their thirties,but it was still not evident in some sixty-and seventy-year-olds.
6.Matsuzawa concluded from his tests that there is a simple remedy to the contraction normally associated with age一using the head.
7.The findings show in general terms that contraction of the brain begins sooner in people in the country than in the towns.Those least at risk,says Matsuzawa,are lawyers,followed by university professors and doctors.White collar workers doing routine work in government offices are,however, as likely to have shrinking brains as the farm worker,bus driver and shop assistant.
8.Matsuzawa's findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need."The best way to maintain good blood circulation is through using the brain,"he says,"Think hard and engage in conversation.Don't rely on pocket calculators." The front and side sections of the brain relates to_________.
A.blood circulation
B.slowed down
C.occupation
D.intellect and emotion
E.eating and breathing
F.fresh oxygen

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[单选题]对下列公安机关的执法行为，可以申请行政复议的是【】。
A.公安机关办理一起刑事案件，对在杀人现场发现的刀具进行扣押
B.公安机关将民警小张调离刑警岗位
C.公安机关对王某在足球场看台上展示的侮辱性标语进行扣押
D.某县公安局制定了户口管理工作规范

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[单选题]电力机车段修机车规程要求,TKS14A 型司机控制器各手柄、手轮操作力不小于( )。
A.30N
B.40N
C.50N
D.60N

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[单项选择]

A. He
B. It
C. She
D. There

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[多选题]城郊线电客车空气弹簧结构组成()。[3分]
A.内层橡胶
B.外层橡胶
C.帘布层
D.钢丝圈

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[单项选择]适用于非屏蔽双绞线的Ethernet网卡应提供______。
A. BNC接口
B. F/O接口
C. RJ-45接口
D. AUI接口

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[判断题]再生剂比耗增加，可提高交换剂的再生程度，故比耗越高越好。（）