单项选择题
A.100Mbit/s和50Mbit/s B.50Mbit/s和150Mbit/s C.50Mbit/s和100Mbit/s D.100Mbit/s和300Mbit/s
A.Focuszone B.Computationzone C.Printingzone D.Filteringzone
A.Altitudes B.Clutterheights C.Clutterclasses D.Vectors