True: Density is a mass of a unit volume of a material substance, Mass is how much stuff is in an object., Volume is a measure of the amount of space that a substance or an object takes up., False: Density is the amount of space in particular., Mass is how much weightful it is., Volume is how tightly packed an object is.,

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?