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【单选题】
What does 'having the right sounds' mean?
A.
It means to have a different sound voicing from you
B.
It means to imitate someone else's voice
C.
It means to have what you say in the right way
D.
It means your natural voice should change when doing your sound corrections
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参考答案:
举一反三
【简答题】A.It warns young people of the hardships of a successful writer. B.It advises young people to give up their idea of becoming writers. C.It shows that writers usually live in poverty and isolation. D.I...
【单选题】The writer advises us to think about ecology, because ______.
A.
it enables us to survive in the closed system of a spaceship
B.
it is a modern science that everybody has to learn
C.
it can be learned quickly if we study it hard
D.
it helps us to understand the relationship between living beings and the environment
【单选题】The writer advises those who hesitate to sell their stocks for money to
A.
sell unless the market goes up.
B.
buy more stocks during a bull market.
C.
wait for the long haul.
D.
sell out as soon as possible.
【单选题】The writer advises us to do the following to prepare for a fire except that ________.
A.
we practice for a fire
B.
we make escape plans
C.
we buy fire extinguishers
D.
we use electrical cookers
【单选题】放大电路中饱和失真和截止失真称为
A.
线性失真
B.
非线性失真
C.
交越失真
D.
频率失真
【单选题】 放大电路中的饱和失真和截止失真称为
A.
线性失真
B.
非线性失真
C.
交越失真
【单选题】活塞式压缩机余隙容积存在的作用是()
A.
提高生产能力
B.
降低功耗
C.
提高排气量
D.
防止发生撞缸危险
【单选题】压缩机的余隙的作用是( )。
A.
避免活塞与气缸发生撞击而损坏
B.
有利于设备制造
C.
有利于电动机带动压缩机
D.
减少气体压缩功
【判断题】活门室是缓冲气体流速,起保护活门的作用,它能使吸气、排气平稳,使气体平衡均匀余隙控制气缸余隙容积为3%~8%,气缸余隙通常为5%~12%
A.
正确
B.
错误
【单选题】放大电路中饱和失真与截止失真称为( )
A.
线性失真
B.
非线性失真
C.
交越失真
D.
未知
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