單項選擇題A check line is().

A.a safety line attached to a man working over the side
B.used to measure water depth
C.used to slow the headway of a barge
D.used to measure the overhead height of a bridge


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1.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

2.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

3.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

4.單項選擇題A contra-guide is a type of().

A.bow thruster
B.cargo gear
C.steering engine
D.rudder

5.單項選擇題A dead reckoning (DR) plot().

A.must utilize magnatic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessels position is fixed