單項(xiàng)選擇題Logbooks are used to record the events occurring when（）.

A.the ship is in a harbor
B.the ship is at anchorage
C.the ship is underway
D.All of the above


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1.單項(xiàng)選擇題Manila lines in which the strands are right-hand laid（）.

A.should be coiled in a clockwise direction
B.should be coiled in a counterclockwise direction
C.may be coiled either clockwise or counterclockwise
D.should never be coiled

2.單項(xiàng)選擇題Mariners are warned that fog signals should（）be relied upon implicity.

A.always
B.never
C.sonetimes
D.sometime

3.單項(xiàng)選擇題Molded depth is measured from the（）.

A.inside of the shell
B.outside of the shell
C.top of the center vertical keel
D.top of the garboard stake

4.單項(xiàng)選擇題Mooring（）are placed on both banks of the Suez Canal about 200m apart.

A.bollards
B.ballasts
C.bands
D.benefits

5.單項(xiàng)選擇題Mooring lines should be turned end-for-end occasionally. This is because（）.

A.a line is weakened by constantly pulling on it in one direction
B.normal wear on the line is thus distributed to different areas
C.it prevents the line from kinking or unlaying
D.it prevents permanent misalignment of the line's internal strands