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题目内容 （请给出正确答案）
[单选题]

The followings are all characteristics of portable VHF radio telephone sets, except __（）

A.working on 156. 800 MHz

B.being watertight

C.being provided with permanently-affixed antenna

D.being provided with two antennas

答案

D、being provided with two antennas

发布时间：2024-03-29
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