﹣个瓶子装满水时的总质量是400g,装满酒精时的总质量是360g.则瓶子的容积是(ρ水=1.0g/cm3,ρ酒精=0.8g/cm3)( )
A:400 cm3
B:250 cm3
C:350 cm3
D:200 cm3
— is it from Suqian to Jiuzhai Valley?
—About l,900 kilometers away. But I'm not sure.
在同一直角坐标系中画出下列一次函数的图象
(1)y=3x
(2)y=5x
(3)y=﹣5x
(4)y=﹣3x.
65□825≈65万,□最大填____.
75×298+75×3﹣75= ____×(____ ____ ____ ____ ____)
关于我国地势的叙述,正确的是( )