出自:佳木斯大学语言治疗学

----What’s __________ name---- ____________ is Linda.
· Your; I
· your; My
· her; She
· his; He
— I believe we’ve met somewhere before.— No, ____________________.
· it isn’t the same
· it can’t be true
· I don’t think so.
· I’d rather not
_____ wonder they said she is a good teacher.( )
· Not
· No
· Neither
· Nor
The maiidea of this text is to ( )
· explaithe difference betweethe old and modermuseums
· encourage people to go to America
· introduce changes imodermuseums
· show people advantages to go museums
There are only about ____ museums iall the United States and Canada 25 years ago. ( )
·3,500.
·2,000.
·3,000.
·6,000.
Why have young people caused the changes imuseums ( )
· Because they are better educated.
· Because they oftego to museums to study.
· Because they have more spare time.
· Because they are very wealthy.
Which of the following is NOT true according to the passage ( )
· Scientific phenomena should be discovered by some people through experiment.
· People are allowed to touch something isome museums.
· The rising iwealth contributes to the changes imuseums.
· The intentioof these changes is only to providing fun.
The directors of the museums have realized ( )
· scientific rules are very important
· people learbest whethey touch something.
· museums are the most popular places
· people become interested if they take part
Many people come to watch football and they want their team to win. Which of the following is not their act( )
· Jumping
· Dancing
· Crying
· Shouting
If they ______, the teams will play oJanuary 1.( )
· receive six points
· play elevegames ithe season
· are the best teams
· move the ball to the end of the field
Why is it difficult to move the ball Because ______.( )
·teyards is a long way
·many meothe other team try not to let the ball come near
·the playing field is very large
·elevemehave to catch the ball one by one
We ca____ the football iboth Americafootball and Chinese football.( )
· kick
· throw
· ruwith
· catch
The passage talks about ______.( )
· football
·how to play football
· Americasports
·Americafootball
According to Robert Putnam,（）
·it is useless to worrying about social isolation
·social isolatiois not necessarily bad for us
·it is time to do something about social isolation
·social isolatiodoes not meathe end of society
It is implied that （ ）tend to live a more socially isolated life.
·people ithe higher social ladder
·people ithe lower social ladder
·people with a longer life span
·people with a shorter life span
According to the passage, close social ties among people are（）
·a must for social progress
·beneficial for the family
·a source of happiness
The percentage of people with more thatwo close friends is about（）.
·25%
·50%
·60%
·75%
One reasofor the social isolatioof Americans is（）
·frequent relocation
·frequent traveling
·living alone
·working flexible hours
would you like to go shopping with me
· Yes, I do.
· sure, I’d love to.
· Thank you.
· Yes, I can.
5. 已知A,A,则 。()
·i1超前i260°;
·i1滞后i260°;
·相位差无法判断。
1. 常用的理想电路元件中,耗能元件是 。()
·开关;
·电阻器;
·电容器;
·电感器。

·正确
·错误
触发器按其工作状态可分为双稳态触发器、单稳态触发器、无稳态触发器。
·正确
·错误

·正确
·错误
二极管有点接触型和面接触型两类。
·正确
·错误

·正确
·错误
主机部分包括中央处理器、系统程序存储器和用户程序及数据存储器。
·正确
·错误
同步发电机的转子是磁极，有显极和隐极两种。
·正确
·错误
磁电式仪表的优点是：刻度均匀，灵敏度和准确度高，阻尼弱。
·正确
·错误

·正确
·错误

·正确
·错误

·正确
·错误
仪表的准确度是根据仪表的相对额定误差来分级的。
·正确
·错误
三相异步电动机分成两个基本部分：定子和转子
·正确
·错误
电压互感器实际上是降压变压器,其原、副方匝数及导线截面情况是( )
·原方匝数多,导线截面小;
·副方匝数多,导线截面小 。
7. 在电动机继电接触控制电路中自锁环节的功能是 。()
·具有短路保护;
·保证启动后持续运行;
·兼有点动功能;
·具有过载保护。
14. 如图所示电路,能正常实现启动和停止控制的电路是 。()
·
·
·
·
32. 双稳态触发器的类型有 。()
·基本RS触发器;
·同步RS触发器;
·主从式触发器;
·前三种都有。
33. 电路如图所示,6Ω 电阻消耗的功率是 。()
·24W
·6W
·36W
·9W
34. 电路如图所示,已知RLC三个元件端电压的有效值均为30V,则,电源电压Us的有效值是 。()
·30V
·90V
·60V
·40V
分析时序逻辑电路的状态表,判定它是 。()
·加法计数器
·减法计数器
·移位寄存器
电路如图1.3所示,设电压表V的内阻为无穷大,R=10kΩ,二极管D的型号为2CP10,则V的读数约为 。()
·0.7V
·0.3V
·1V
放大电路如图所示,由于RB1,和R B2阻值选取得不合适而产生了饱和失真,为了改善失真,正确的做法是 。 ()
·适当增加RB2,减小RB1
·保持RB1不变，适当增加RB2
·适当增加RB1，减小RB2
·保持RB2不变，适当减小RB1
电路如图所示，其逻辑功能为( )<o:p></o:p>
·
对两极共射阻容耦合交流放大器,希望稳定其输出信号电压,并提高其输入电阻,要求从第二级至第一级引入的反馈为( )。
·串联电压负反馈
·串联电流负反馈
·并联电压负反馈
·并联电流负反馈
当电流源开路时,该电流源内部( )
·有电流,有功率损耗;
·无电流,无功率损耗;
·有电流,无功率损耗。
提高供电电路的功率因数,下列说法正确的是( )
·减少了用电设备中无用的无功功率;
·减少了用电设备的有功功率,提高了电源设备的容量；
·可以节省电能；
·可提高电源设备的利用率并减小输电线路中的功率损耗。
三相对称电路是指( )
·三相电源对称的电路;
·三相负载对称的电路;
·三相电源和三相负载均对称的电路。
自耦变压器不能作为安全电源变压器的原因是( )
·公共部分电流太小;
·原副边有电的联系;
·原副边有磁的联系。
三相异步电动机的旋转方向与通入三相绕组的三相电流的( )有关。
·大小;
·方向;
·相序;
·频率。
首页 <上一页 1063 1064 1065 1066 1067 下一页> 尾页