A.0.3‰-0.5‰ B.0.5‰-1‰ C.1‰-3‰ D.3‰-5‰
A.倒裝 B.換裝 C.轉(zhuǎn)裝 D.運裝
A.0.25~0.30m B.15~20cm C.1.0~1.5cm D.1.5~2.0cm