A.min(75,s/2) B.min(50,s/2) C.min(25,s/2) D.min(100,s/2)
A.100 B.50 C.s/2 D.200
A.設(shè)置 B.不設(shè)置 C.宜設(shè)置 D.不宜設(shè)置