單項選擇題Chafing gear().

A.reduces and prevents corrosion of standing rigging
B.prevents corrosion of running rigging
C.reduces and prevents wear caused by the rubbing of one object against another
D.protects the body against extreme cold


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1.單項選擇題Chafing gear is normally used().

A.for portable fenders
B.for ground tackle
C.on the inside of the hawsepipe
D.on mooring lines

2.單項選擇題Chafing gear is used to().

A.anchor the boat
B.pick up heavy loads
C.protect fiber rope from abrasion
D.strengthen mooring lines

3.單項選擇題Changing direction by bringing the stern of the vessel through the eye of the wind is known as().

A.jibing
B.running before the wind
C.tacking
D.reefing

5.單項選擇題C02 extinguishes a fire by().

A.cooling
B.smothering
C.chemical action
D.All of the above