航海英語航路指南單項(xiàng)選擇題每日一練(2019.01.24)

單項(xiàng)選擇題
As these features are not all charted，special caution should be exercised （） vessels navigating in the vicinity.
A.by
B.with
C.on
D.in
單項(xiàng)選擇題
The height of eye correction is smaller than geometrical dip because of （）.
A. the angle between the horizontal and the line of sight to the visible horizon
B. index error
C. parallax
D. terrestrial refraction
單項(xiàng)選擇題
The distance between the surface of the water and the tidal datum is the （）.
A.range of tide
B.height of tide
C.charted depth
D.actual water depth
單項(xiàng)選擇題
The distance between any two meridians measured along a parallel of latitude （）.
A.increases in north latitude and decreases in south latitude
B.decreases as DLO increases
C.increases with increased latitude
D.decreases with increased latitude
單項(xiàng)選擇題
You will find information about the duration of slack water in the （）.
A.Tidal Current Tables
B.Tide Tables
C.American Practical Navigator
D.Sailing Directions