單項(xiàng)選擇題

One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.

A.installing rat guards on the mooring lines when in port
B.keeping foods protected and avoiding the accumulation of garbage
C.eliminating possible living spaces for rats when the ship is constructed
D.trapping and/or poisoning the rats

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單項(xiàng)選擇題

Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? （）

A.Greenish
B.Bluish
C.Grey
D.Grey-white

單項(xiàng)選擇題

In order to benefit from the use of storm oil in heavy seas，the storm oil should be spread （）.

A.around the rudder and screws
B.completely around the vessel
C.to leeward of the vessel
D.to windward of the vessel

One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.

你可能感興趣的試題

Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? （）

In order to benefit from the use of storm oil in heavy seas，the storm oil should be spread （）.

In order to benefit from the use of storm oil in heavy seas，the storm oil should be spread （）.