The packing and sorting is being done by________.

The packing and sorting is being done by________.A.a business sponsor B.other s

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________ many times, but he still couldn't understand it.

________ many times, but he still couldn't understand it.A.Having been told B.H

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You know that's right, ________ ?

You know that's right, ________ ?A.is it B.isn't it C.do you D.don't you

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More students than one ________ there.

More students than one ________ there.A.has been B.have been C.had been D.would

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光传送网(OTN)特点不包括(  )。

光传送网(OTN)特点不包括(  )。A.支持多种业务 B.满足用户对带宽持续增长 C.与现有SDH网络兼容性 D.不能管理多根光纤中的所有波长

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