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【判断题】
永磁同步电动机( PMSM)系统以其高效、高控制精度、密度等特点在电动汽车电驱动系统中具有很高的应用价值。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】---He seems to be a teacher. ---______. He has been a teacher for 20 years.
A.
So he does
B.
So he is
C.
So does he
D.
So is he
【单选题】What is said about Chris in Paragraph3?
A.
He has been a policeman since he was seven.
B.
He gave people the idea of starting Make-A-Wish
C.
He wanted people to help make his dream come true.
D.
He was the first child Make-A-Wish helped after it had been set up.
【简答题】首字母填空（10小题*1=10分） My friend is a taxi driver. He has been a taxi driver for ten years. It’s a nice job m 小题1: of the time. He can meet a lot of people. He always works at night because there is too mu...
【单选题】-He seems to be a good teacher . - _____ . He has been a teacher for 20 years.
A.
So does he
B.
So he does
C.
So is he
D.
So he is
【判断题】--- 现在完成时、过去完成时和将来完成时 基本概念 * He has finished his work now. * He has been a teacher for ten years. * He said he had finished his work. * He said he had been a teacher for 10 years. * He will have finis...
A.
正确
B.
错误
【简答题】根据产品替代程度，竞争可以分为_________。 (A)品牌竞争 (B)行业竞争 (C)形式竞争 (D)一般竞争
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