单项选择题
（）tankers over 100 meters long must not proceed beyond Dongbei buoy.
A.Loading B.Load C.Lade D.Laden
单项选择题 （）the canal transit, the radar was operating.
单项选择题 （）the morning from 0800 to 1200 chief officer is on duty.
单项选择题 （）the packing is the same, the lots are different inmarks.
