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【判断题】
主轴交流电机的变频调速在低速转矩变功率调速;高速功率变转矩调速。( )A.
正确
B.
错误
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举一反三
【单选题】Green is the color of _______ nature. And you can enjoy the colorful rainbow in _______ sky after the rain.
A.
the; the
B.
/; a
C.
/; the
D.
a; the
【单选题】Mr Green often says “what is learnt in the ______ lasts to the grave”, intending to impress on us the significance of reading more books while we’re young.
A.
brochure
B.
association
C.
encyclopedia
D.
cradle
【单选题】Mr. Green’s office is _______ the 26th floor. You can take the lift there.
A.
at
B.
in
C.
on
D.
for
【单选题】What does 'a green-fingered demographic' refer to in the 4th paragraph?
A.
Professional gardeners.
B.
People with green fingers.
C.
Amateur gardeners.
D.
Foreign gardeners.
【简答题】This is the Green family. Mr and Mrs Green are from England. They are both good English teachers. They teach English in a junior high school in China. They like their work a lot . They have two childr...
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