单项选择题
A. rat guards B. stopping guards C. fenders D. planks
National flag should not be（卷叠）（）.A. rolling upB. rolls...
单项选择题National flag should not be（卷叠）（）.
A. rolling up B. rolls up C. rolled up D. roll up
We shall prepare for(港口国)（）inspection.A.PSCB.ARPAC.GPSD...
单项选择题We shall prepare for(港口国)（）inspection.
A.PSC B.ARPA C.GPS D.ECDIS
（）（降）the flag.A.HoistB.TopC.LowerD.Bring
单项选择题（）（降）the flag.
A.Hoist B.Top C.Lower D.Bring
