把6千克:3吨化成最简单的整数比是______.
6千克:3吨,
=6千克:3000千克,
=6:3000,
=(6÷6):(3000÷6),
=1:500.
故答案为:1:500.
地质成因类型
φ15米环形炉加热的管坯长度为()
A.1300~3200mm
B.1300~3600mm
C.1000~3200mm
D.1000~3600mm