Usually, emergency electricity supplies to on board（）

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• 英译汉：emergency

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  A . a month B . in each week C . in every 6 months D . in every 12 month

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• In the emergency alarm signals, if the alarm or whistle two long sounds followed by one short sound for 1 minute, it is the （） emergency.

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• emergency medicine是（）。

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• During whose reign Peking Opera emerged?

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• emergent

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• Emergency Department 译成：

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• "Emergency document"指的是（）

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