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是两构件通过 或 接触的运动副。
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【单选题】Part A Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You...
A.
His family may not like this new flat.
B.
He and his family will enjoy living in the flat.
C.
He is the only person who likes the flat.
D.
He thinks the woman will like the flat.
【单选题】Part A Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points) For years Internet merchants have poured millions of dollars into new techn...
A.
consumers often failed to see the efforts made by Internet shops.
B.
customers' expectations exceed what the Internet shops are offering.
C.
consumer cognitive levels do not rise as easily as sellers believe.
D.
customers expect Internet merchants to invest even more heavily.
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