Physics Unit22: Electromagnetic Waves (id: 0a95adbf8)

本题目来源于试卷: Physics Unit22: Electromagnetic Waves，类别为 通用国际物理

[单选题]
How long does it take the sign6qpo9e.qhe7sh u d6m 19q5oro al from a local r66um*dro g hans3r v3 l2e/wf2adio station to travel 20 miles?

A. $2.8 \; s$
B. $108 \; ms$
C. $38 \; ms$
D. $108 \; ms$


参考答案:  D


本题详细解析: 暂无

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