利用地震波在地球内部传播的波速来推测地球内部的圈层结构时，根据地震波的传播方式可分为The earth's layered structure is distinguished by the change of velocity of seismic wave, what’s the seismic waves classified by their propagation mode?__
可以在液态物质中传播的是
Which one can spread in liquid?__
A. 体波和纵波 | Body wave and longitudinal waveB. 体波和面波 |Body wave and suce wave
C. 纵波 |longitudinal wave
D. 横波 | transverse wave