单项选择题
A.1:0.25:0.5:0.4B.1:0.25:0.25:0.4C.1:0.5:0.25:0.4D.1:0.25:0.25:0.5
A.3~7;淋水B.3~7;喷雾C.7~12;淋水D.7~12;喷雾
A.2~4B.4~6C.6~8D.8~10