找考题网-背景图
多项选择题

Which of the following CRS upgrades are allowed?()

A.CRS 2.2 to CRS 3.5 
B.CRS 3.1 to CRS 4.0 
C.CRS 2.2 to CRS 4.0 
D.CRS 3.5 to CRS 4.0 
E.CRS 4.0 to CRS 3.0 
F.CRS 2.1 to CRS 4.0

热门试题