多项选择题
A.Discovery XR656 Plus B.Optima XR220 C.DR-F D.XR316
A.60KW 630mA B.50KW 630mA C.80KW 800mA D.80KW 1000mA
A.扇形扫描 B.平行扫描 C.卧位拼接 D.立位拼接