How did mobile radio systems find its business competitiveness? SMR systems gain an edge over other services mostly by virtue o

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问题 How did mobile radio systems find its business competitiveness?
SMR systems gain an edge over other services mostly by virtue of ______.

选项 A、its prohibitive retail prices.
B、its operational convenience.
C、its wider coverage areas.
D、its small storage capacity.

答案C

解析

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考研英语一

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