单项选择题

If your passenger vessel is fitted with a loudspeaker system，it must be tested at least once （）.

A.every week
B.a day
C.every trip
D.a watch or once a trip，whichever is shorter

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单项选择题

Functions aboard a tanker or tank barge such as connecting，disconnecting，and topping off must be supervised by（）.

A.any certificated tankerman
B.the Master of the vessel
C.the officer of the watch
D.the person designated as "person in charge"

单项选择题

At 0900，you take the following radar ranges: Watch Hill Point 5.4 miles; Block Island Grace Point 8.3 miles. Which statement is TRUE? （）

A.You are within 3 nautical miles of the coast
B.The bottom in the area is sand and gravel
C.The fix is indeterminate
D.You are governed by the Inland Rules

单项选择题

A passenger vessel is underway. When may passengers visit the pilothouse? （）

A.Passengers are excluded from the pilothouse while underway
B.Passengers are permitted in the pilothouse during daylight hours only
C.Passengers are permitted to visit the pilothouse when authorized by the Master and officer of the watch
D.Passengers are permitted in the pilothouse when they are escorted by a ship's officer