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
您可能感興趣的試卷
你可能感興趣的試題
A.At the start of spring，when the Sun is nearly over the equator
B.Only when the Sun and Moon are on the same sides of the Earth and are nearly in line
C.When the Sun and Moon are at approximately 90° to each other，as seen from the Earth
D.When the Sun，Moon，and Earth are nearly in line，regardless of alignment order
A.shallow water
B.deep water
C.river
D.tide
A.SEMIDIURNAL
B.DIURNAL
C.MIXED
D.OSCILLATING
A.slack water when upbound
B.shallow water
C.a cross current
D.a head current
A.Moon being at its maximum declination
B.Moon crossing the equator
C.Sun and Moon both being near 0°declination
D.Moon being at perigee
最新試題
The velocity of a rotary tidal current will be decreased when the Moon is（）.
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.
Tide is（）in direction ENE.
The Benguela Current flows in a（）.
Tropic tides are caused by the（）.
River currents tend to（）.
The velocity of the current in large coastal harbors is（）.
Stand of the tide is that time when（）.
Neap tides occur when the（）.
Neap tides occur（）.