,
线段OC=2a﹣b
甲.乙两物体的密度相同,甲的体积是乙的2倍.将它们叠放在水槽里的水中,水面恰好与甲的上表面相平,如图所示.现将乙物体取下,当甲物体静止时,甲物体将( )
However, no one could find a scale(称)____ (large enough, enough large).