單項(xiàng)選擇題The International Association of Lighthouse authorities (IALA) buoyage system “A” uses some types of marks to distinguish safe navigation? Which type(s) does(do) not belong to the system?()

A.lateral marks and cardinal marks
B.safe water marks
C.isolated danger marks and special marks
D.dangerous water marks


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1.單項(xiàng)選擇題Which refers to the living space for seafarers?()

A.Poop
B.Store room
C.Accommodation
D.Saloon

2.單項(xiàng)選擇題()cargoes in IMSBC code are those that are likely to liquefy.

A.Group A
B.Group B
C.Group C
D.Group D

5.單項(xiàng)選擇題The port of registry is().

A.not required to be marked anywhere on the vessel
B.required to be marked on both bows and on the keel
C.required to be marked on the stern with the name of the vessel marked on both bows
D.required to be marked on the keel, stern, and both bows