A GIS stores information about the world a
题型:单项选择题
问题:
A GIS stores information about the world as a collection of thematic ______ that can be linkedtogether by geography.
A.files
B.objects
C.document
D.layers
A GIS stores information about the world as a collection of thematic ______ that can be linkedtogether by geography.
A.files
B.objects
C.document
D.layers