Mr White told me that he as well as the Greens were planning to fly to New York for a

A              B            C            D

visit.

下列计量单位中属于我国法定计量单位的是（）。

A.容积单位公升

B.长度单位公分

C.密度单位克每立方厘米

D.密度单位克每立方米