单项选择题
A.10% B.20% C.30% D.40%
A.65%-80% B.65%-85% C.65%-120% D.85%-120%
A.65%-80% B.65%-85% C.80%-110% D.85%-110%
A.IP3X;IP2X B.IP4X;IP2X C.IP4X;IP3X D.IP4X;IP4X
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