單項選擇題

A chock（）.

A.is a deck fitting used to shackle gear to the deck
B.permits easy jettisioning of deck cargo in an emergency
C.prevents stress concentration in the bulwark
D.provides opening through the bulwark for mooring lines

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單項選擇題

A chock is a（）.

A.deck fitting used to secured mooring lines
B.casting fitting at the side of a weatherdeck, used as a fairlead
C.sharp block of wood used to support hygroscopic cargo
D.smoke pipe for the galley stove

單項選擇題

A C0₂ portable extinguisher is annually checked by（）.

A.reading the gage pressure
B.weighing the extinguisher
C.discharging a small amount of CO₂
D.seeing if the seal has been broken

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A chock（）.

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A chock is a（）.

A C02 portable extinguisher is annually checked by（）.

A C0₂ portable extinguisher is annually checked by（）.