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【判断题】
驱动电机主要包括直流电机、交流异步电机、永磁同步、开关磁阻电动机。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】Which form. other than oral speech would be most commonly used among blind people?
A.
picture signs
B.
signal flags
C.
sign language
D.
Braille
【单选题】听力原文： People have been painting pictures for at least 30,000 years. The earliest pictures were painted by people who hunted animals. They used to paint pictures of the animals they wanted to catch. Pi...
A.
Because they wanted to record the animals they caught.
B.
Because they wanted to make stories about, animal-hunting.
C.
Because the painters wanted to show imagination.
D.
Because the pictures were thought to be helpful.
【简答题】（ ）是现代培训活动的首要环节。
【单选题】Which form. other than oral speech could be most commonly used among blind people?
A.
Picture signs.
B.
Braille.
C.
Body language.
D.
Signal flags.
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