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
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1.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
2.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
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A tide is called diurnal when（）.
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The company should establish and maintain procedures to control all documents and date which are relevant to（）.
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