A .水封瓶长玻管在水下3~4Cm,水封瓶低引流口60Cm
B .水封瓶长玻管在水下3~4Cm,水封瓶低引流口40Cm
C .水封瓶长玻管在水下4~6Cm,水封瓶低引流口30Cm
D .水封瓶长玻管在水下4~6Cm,水封瓶低引流口60Cm
E .水封瓶长玻管在水下2~3Cm,水封瓶低引流口50Cm