單項選擇題When visibility is 10 nautical miles, we say that visibility is().

A.very good
B.good
C.poor
D.moderate


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2.單項選擇題When within the entrance, the vessel should()surf islet.

A.navigate
B.arrive at
C.steer for
D.maneuver for

3.單項選擇題Which of the following best indicates how many tons of cargo a ship can carry?().

A.Bale cubic
B.Deadweight
C.Gross tonnage
D.Net tonnage

4.單項選擇題Who checks the bridge clock for accuracy each day?().

A.Third officer
B.Second officer
C.Chief officer
D.Assist nt officer

5.單項選擇題You are getting closer to the vessel(),which is on the same course as you.

A.head
B.ahead
C.headed
D.heading