A.Hard rubber
B.Canvas
C.Leather
D.Sponge rubber
您可能感興趣的試卷
你可能感興趣的試題
A.at the lowest point
B.near the batteries
C.at the highest point
D.only when charging is in progress
A.take part
B.watch
C.go to their quarters
D.stay out of the way and do what they want
A.obliged
B.obliging
C.oblige
D.being obliged
A.repair
B.repaired
C.repairing
D.to repair
A.good getting ground
B.good holding ground
C.good grabbing ground
D.good handling ground
最新試題
The ship will be()demurrage soon.
Which method of adjusting mooring lines is MOST useful for leaving a boat free to rise and fall with the tide?()
The term PROLONGED BLAST refers to().
Which statement is TRUE concerning radiotelephones on board towing vessels?()
Which may ignite fuel vapors?()
Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?()
The ship is now down()head.
The ship is not very stable,please()when making a turn.
The radiotelegraphy safety messages for condition indicating distress,urgency and safety,respectively,are().
Which spoken emergency signal would you use to call a boat to come assist a man overboard?()