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【判断题】
机构的自由度数应小于原动件数,否则机构不能成立A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】She said she would return the dictionary to me ________.
A.
tomorrow
B.
last day
C.
the next day
D.
next day
【简答题】A．She can return the loan on time. B．She possessed a costly ear. C．She borrowed a lot of money. D．She is a multimillionaire.
【单选题】If Lucy finishes reading the book, how can she return it?
A.
Just use the self-return machine.
B.
Just use the scanner.
C.
Just use the printer.
【简答题】三相电源的相序有 和 之分
【简答题】She needs to return the book by next Friday.
【单选题】If Lucy finishes reading the book, how can she return it?
A.
Just use the scanner.
B.
Just use the self-return machine.
C.
Just use the printer.
D.
Just use the key.
【简答题】A．She can return the loan on time. B．She possessed a costly car. C．She borrowed a lot of money. D．She is a multimillionaire.
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