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【简答题】
步进电动机的主要性能指标有（ ）。
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皮皮学刷刷变学霸
举一反三
【单选题】—I'm going to buy some _____. What about you? —I'm going to buy some _____. [ ]
A.
tomatos; potatoes
B.
tomatoes; potatos
C.
tomatoes; potatoes
D.
tomatos; potatos
【简答题】简述噬菌体的生物学性状。
【简答题】在昼间,股道号码信号显示两臂向上直伸,表示是( )道股道号码信号。
【简答题】为下列句子选择相应图片。 ( ) 1. I'm going to take a trip next week. A. ( ) 2. I'm going to the cinema this evening. B. ( ) 3. I'm going to buy some books in the bookstore this afternoon. C. ( ) 4....
【简答题】选择恰当的句子，补全对话。 A. I'm going to be a writer. B. In New York. C. I'm going to take writing lessons. D. No, I'm not. I'm going to sing rock music. E. When are you going to start? F. I want to be a singer....
【单选题】In paragraph 3, which of the following is NOT given as a reason for a reduction in death rates?
A.
New inventions.
B.
Better hygiene.
C.
Improved food production.
D.
Better control of fatal diseases.
【单选题】We are making a (n) ____ of 20% reduction in the price to all customers who place an order before May. [ ]
A.
service
B.
offer
C.
budget
D.
appointment
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