單項選擇題

Charted depth is the（）.

A.vertical distance from the tidal datum to the ocean bottom plus the height of the tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place

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單項選擇題

Chart legends which indicate a conspicuous landmark are printed in（）.

A.capital letters
B.italics
C.boldface print
D.underlined letters

單項選擇題

Chart legends printed in capital letters show that the associated landmark is（）.

A.conspicuous
B.inconspicuous
C.a government facility or station
D.a radio transmitter