安全钳开关安装时,要求固定牢固,动作可靠。()

题型:判断题

问题:

安全钳开关安装时,要求固定牢固,动作可靠。()

考点:电梯操作证考试第二部分专业知识第二部分专业知识题库
题型:判断题

用作存储器的芯片有不同的类型。

可随机读写,且只要不断电则其中存储的信息就可一直保存的,称为 (91)

可随机读写,但即使在不断电的情况下其存储的信息也要定时刷新才不致丢失的,称为 (92)

所存信息由生产厂家用掩膜技术写好后就无法再改变的,称为 (93)

通过紫外线照射后可擦除所有信息,然后重新写入新的信息并可多次进行的,称为 (94)

通过电信号可在数秒钟内快速删除全部信息,但不能进行字节级别删除操作的,称为 (95)

91()

A.RAM

B.VRAM

C.DRAM

D.SRAM

题型:判断题
If you want to learn a new language,the very first thing to think about is why.Do you need it for a____reason,such as your job or your studies?__2__perhaps you’re interested in the____,films or music of a different country and you know how much it will help to have a____of the language.
Most people learn best using a variety of____,but traditional classes are an ideal(理想的)start for many people.They____an environment where you can practice under the ____ of someone who’s good at the language.We all lead ____ lives and learning a language takes____.You will have more success if you study regularly,so try to develop a____.It doesn’t matter if you haven’t got long.Becoming fluent in a language will take years,but learning to get by takes____.
Many people start learning a language and soon give up.“I’m too____,” they say.Yes,children do learn languages more ___ than adults,but research has shown that you can learn a language at any____.And learning is good for the health of your brain,too.I’ve also heard people____ about the mistakes they make when____.Well,relax and laugh about your mistakes ____you’re much less likely to make them again.
Learning a new language is never ___.But with some work and devotion,you’ll make progress.And you’ll be ____by the positive reaction of some people when you say just a few words in ___ own language.Good luck!                                 (2013·安徽)
小题1:
A.technicalB.political
C.practicalD.physical
小题2:
A.AfterB.So
C.ThoughD.Or
小题3:
A.literatureB.transport
C.agricultureD.medicine
小题4:
A.viewB.knowledge
C.formD.database
小题5:
A.paintingsB.regulations
C.methods D.computers
小题6:
A.protectB.change
C.respectD.provide
小题7:
A.controlB.command
C.guidanceD.pressure
小题8:
A.busyB.happy
C.simpleD.normal
小题9:
A.courageB.time
C.energyD.place
小题10:.
A.theoryB.business
C.routineD.project
小题11:
A.some risksB.a lot less
C.some notesD.a lot more
小题12:
A.oldB.nervous
C.weakD.tired
小题13:
A.closelyB.quickly
C.privatelyD.quietly
小题14:
A.ageB.speed
C.distanceD.school
小题15:.
A.worryB.hesitate
C.thinkD.quarrel
小题16:
A.singingB.working
C.bargainingD.learning
小题17:
A.ifB.and
C.butD.before
小题18:
A.tiresomeB.hard
C.interestingD.easy
小题19:
A.blamed B.amazed
C.interruptedD.informed
小题20:
A.theirB.his
C.ourD.your
题型:判断题

下列关于保证的特征,叙述不正确的是( )。

A.从属性

B.独立性

C.双务性

D.补充性

题型:判断题

读某国沿60°纬线地形剖面图,回答下列各题。

述⑥山脉东西两侧的气候差异并分析其差异的形成原因。

题型:判断题

关于三位四通阀机能图说法正确的是()。

A.所谓K型,P型,和Y性换向阀,实际是同一种阀,只是四根管子连接不同而已,

B.处于中位时,对于P型和Y型,油泵处于卸荷状态

C.处于中位时,与P型阀相连通往执行机构的两根油管,一起接通油箱.

D.处于中位时,与K型阀相连的执行机构两侧压力相等,并为最大值.

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