VHF radio is one of the very important navigational instruments on board,（）messages can be sent. -题库考试答案搜索网

VHF radio is one of the very important navigational instruments on board,（）messages can be sent.

单选题

2022-01-03 11:28

A、by which
B、through which
C、by that
D、through that

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正确答案

B

试题解析

标签：航海英语综合练习

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