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Conversation:How long will Mr. Brown be staying?[音频]

About a year.
B. About a month.
C. At least a year.
D. Less than a week.

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Conversation:What luggage does Mr. Brown have?[音频]

A small suitcase and a box with tools.
B. A small suitcase with some products.
C. A small box with some documents.
D. A small suitcase and a box with some products.

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Passage:[音频]I arrivedin plenty of time and, but I only had one small suitcase, so Idecidedto take it on the plane as. While I was sitting there drinking andreading, I wasn't aware of a woman and her child at the next table. Idid notthem and when was called, I reached for my suitcase and left.

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汽蚀比转速反映了泵的抗汽蚀性能,而且()

A. 汽蚀比转速越大,泵的抗汽蚀性能越好
B. 汽蚀比转速越大,泵的抗汽蚀性能越差
C. 汽蚀比转速大小,与泵的抗汽蚀性能无关
D. 以上都不正确

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托马(Thoma)汽蚀系数反映了泵的抗汽蚀性能,而且()

A. 托马(Thoma)汽蚀系数越大,泵的抗汽蚀性能越好
B. 托马(Thoma)汽蚀系数越大,泵的抗汽蚀性能越差
C. 托马(Thoma)汽蚀系数大小,与泵的抗汽蚀性能无关
D. 以上都不正确

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Conversation:How long will Mr. Brown be staying?[音频]

About a year. B. About a month. C. At least a year. D. Less than a week.

Conversation:What luggage does Mr. Brown have?[音频]

Passage:[音频]I arrivedin plenty of time and, but I only had one small suitcase, so Idecidedto take it on the plane as. While I was sitting there drinking andreading, I wasn't aware of a woman and her child at the next table. Idid notthem and when was called, I reached for my suitcase and left.

汽蚀比转速反映了泵的抗汽蚀性能,而且()

托马(Thoma)汽蚀系数反映了泵的抗汽蚀性能,而且()

About a year.
B. About a month.
C. At least a year.
D. Less than a week.