航海英语潮汐与涌浪章节练习(2019.05.06)

单项选择题
Neap tides occur only（）.
A.at a new or full Moon
B.when the Sun，Moon，and Earth are in line
C.at approximately 28-day intervals
D.when the Moon is at quadrature
单项选择题
The tide is（）.
A.black
B.setting
C.being
D.having
单项选择题
A wave entering（）is likely to produce bores．
A.shallow water
B.deep water
C.river
D.tide
单项选择题
Spring tides occur（）.
A.when the moon is new or full
B.when the moon and sun have declination of the same name
C.only when the moon and sun are on the same sides of the earth
D.at the beginning of spring when the sun is over the equator
单项选择题
Spring tides are tides that（）.
A.have lows lower than normal and highs higher than normal
B.have lows higher than normal and highs lower than normal
C.are unpredictable
D.occur in the spring of the year
单项选择题
Which current would you encounter on a direct passage from southern Africa to Argentina，South America（）.
A.South Atlantic
B.South Equatorial
C.Agulhas
D.Guinea
单项选择题
Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes（）.
A.Iceland Current
B.Baltic Current
C.Labrador Current
D.Baffin Current
单项选择题
When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to（）.
A.Add one hour to the times listed under the reference stations
B.Subtract one hour from the time differences listed for the subordinate stations
C.Apply no correction as the times in the reference stations are adjusted for daylight savings time
D.Add 15° to the standard meridian when calculating the time difference
单项选择题
The current rates（）excess of 2 kn may occur with prolonged strong winds.
A.by
B.with
C.on
D.in
单项选择题
The Brazil Current flows in which general direction? （）
A.Northwesterly
B.Southwesterly
C.Southerly
D.Northerly