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三副
After casting off moorings at a mooring buoy in calm weather，you should______．
2022-01-06
A vessel on the high seas that is not under command shall display which of the following day signals？ ______
2022-01-06
Before starting to hoist provisions, which should be checked？______.
2022-01-06
A large oil fire on the deck of a ship can be fought most effectively with ______.
2022-01-06
A frontal thunderstorm is caused by ______.
2022-01-06
______is the number of millimeters by which the mean draft changes when a ship passes from salt water to fresh water，or vice versa，whilst floating at the loaded draft．
2022-01-06