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问题详情

The broadcast will normally be made on the two listed frequencies simultaneously except during transmitter maintenance periods when the broadcast will be made on the two frequencies（）.

A、at the same time

B、exclusively

C、within the same period

D、consecutively

时间：2022-01-03 12:01 关键词： 各种英文业务电报、电传、传真、电子邮件等

答案解析

D