一只汽油桶可装45L汽油,我们说它的什么是45L? 请选择ABC9U8o6c9d/r(g7Z,y.V6e1Y/W6n.F'}8^'R5[*D
A.体积.V6e1Y/W6n.F'}8^'R5[*D
B.容积.V6e1Y/W6n.F'}8^'R5[*D
C.质量.V6e1Y/W6n.F'}8^'R5[*D