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【简答题】
To be a good teacher, you need some of the gifts of a good actor; you must be able to hold the attention and interest of your audience; you must be a clear speaker, with a good, strong, pleasing voice which is fully under your control; and you must be able to act what you are teaching, in order to make its meaning clear. Watch a good teacher, and you will see that he does not sit still before his class: he stands the whole time he is teaching; he walks about, using his arms, hands and fingers to help him in his explanations, and his face to express feelings. Listen to him, and you will hear the loudness, the quality (音色) and the musical note of his voice always changing according to what he is talking about. The fact that a good teacher has some of the gifts of a good actor doesn't mean that he will indeed be able to act well on the stage, for there are very important differences between the teacher’s work and the actor’s. The actor has to speak words which he has learnt by heart; he has to repeat exactly the same words each time he plays a certain part, even his movements and the ways in which he uses his voice are usually fixed beforehand (预先). What he has to do is to make all these carefully learnt words and actions seem natural on the stage. A good teacher works in quite a different way. His audience takes an active part in his play: they ask and answer questions, they obey orders, and if they don't understand something, they say so. The teacher therefore has to meet the needs of his audience, which is his class. He cannot learn his part by heart, but must invent it as he goes along. I have known many teachers who were fine actors in class but were unable to take part in a stage-play because they could not keep strictly to what another had written.
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【简答题】( )把基带信号经过载波调制后,把信号的频率范围搬移到较高的频段以便在信道中传输(即仅在一段频率范围内能够通过信道)
【简答题】apparent convince curiosity detail fundamentalpatience respond spark stir ultimateThe speaker had noticed that his topic wasn’t popular with the audience, so he quickly ended his speech.
【多选题】地陪在送走旅游团后,应做好的后续工作主要有( )等。
A.
领受新的接待任务
B.
处理遗留问题
C.
到财务部门结账
D.
做好接团小结
E.
上交接团过程中发生的各种票单
【多选题】地陪在送走旅游团后,应做好的后续工作主要右( )等。
A.
领受新的接待任务
B.
处理遗留问题
C.
到财务部门结账
D.
做好接团小结
E.
上交接团过程中发生的各种票单
【判断题】高空作业区域下方出现与高处作业垂直交叉的其它作业,注意施工安全的情况下,可继续施工。
A.
正确
B.
错误
【判断题】高空作业区域下方出现与高处作业垂直交叉的其它作业,注意施工安全的情况下,可继续施工。
A.
正确
B.
错误
【单选题】The composer Wolfgang Amadeus Mozart’s remarkable musical talent was apparent even before most children can sing a simple nursery rhyme.Wolfgang’s older sister Maria Anna (who the family called Nanner...
A.
his father thought it would be profitable.
B.
he had a natural talent.
C.
he saw his sister learning to play an instrument.
D.
he came from a musical family.
【单选题】下列关于调制,说法不正确的是
A.
基带调制仅对基带信号的波形进行变换,使它能够与信道特性相适应。
B.
基带调制变换后的信号为宽带信号或频带信号。
C.
带通调制使用载波 (carrier)进行调制,把基带信号的频率范围搬移到较高的频段,并转换为模拟信号,这样就能够更好地在模拟信道中传输(即仅在一段频率范围内能够通过信道) 。
D.
带通信号指的是经过载波调制后的信号。
【单选题】停电操作应在断路器断开后进行,其顺序为( )。
A.
先拉线路侧刀闸,后拉母线侧刀闸
B.
先拉母线侧刀闸,后拉线路侧刀闸
C.
先拉哪个侧刀闸不要求
D.
视情况而定
【多选题】关于TCP/IP体系结构的描述中,错误的是()
A.
互联层负责应用进程之间的端-端通信
B.
传输层相当于OSI参考模型的网络层
C.
应用层定义了TCP和UDP协议
D.
互联层定义了Telnet协议
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