本题目来源于试卷: Physics Unit11: Vibrations and Waves，类别为 通用国际物理
[单选题]
In seismology, the P wave is a longitudinal wave. As 0d f6ygg6j24 rrz ,jnlycs.:y/2 yxuwa P wave travels throqv qyr o 4ic9f;;;l(x3v h,ginugh the Earth, the relative motion between the P wave and the paqxyqor3v; h vng9ili;,c 4(;frticles is
A. parallel.
B. perpendicular.
C. first parallel, then perpendicular.
D. first perpendicular, then parallel.
参考答案: A
本题详细解析:
暂无
| 
