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单选题
Stand of the tide is that time when（）.
A
the vertical rise or fall of the tide has stopped
B
slack water occurs
C
tidal current is at a maximum
D
the actual depth of the water equals the charted depth
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单选题The interval of the average elapsed time from the meridian transit of the moon until the next high tide is called the（）.A
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difference between the depth of the water at high tide and the depth of the water at low tide
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单选题When shall the stand-on vessel change course and speed?（）A
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after the give-way vessel sounds one blast in a crossing situationC
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单选题When you keep a gangway watch, you should （）the mooring lines according to the rise and fall of the tide.A
adjustedB
adjustingC
adjustsD
adjust
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单选题Where would you find information about the time of high tide at a specific location on a particular day of the year?（）A
Tide TablesB
Tidal Current TablesC
Coast PilotD
Nautical Almanac
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单选题A tide is called diurnal when（）.A
only one high and one low water occur during a lunar dayB
the high tide is higher and the low tide is lower than usualC
the high tide and low tide are exactly six hours apartD
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单选题Why is NTP an important component when implementing IPSec VPN in a PKI environment？（）A
To ensure the router has the correct time when generating its private/public key pairs.B
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To ensure the router time is sync with the remote peers during theDH exchangeE
To ensure the router time is sync with the remote peers when generating the cookies during IKE phase 1
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单选题（）we stand away from the church bell, it takes time for the sound waves to reach us.A
IfB
WheneverC
BecauseD
Where
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单选题有时风大流急，船舶靠码头时必须掉头顶流。（）A
A ship has to turn to stem the tide because the wind is strong when she is getting alongside a wharf.B
Sometimes the wind is strong and the current is rough, so a ship has to turn to stem the tide when she is getting alongside a wharf.C
The wind is big, a ship must get alongside a wharf so she has to turn to stem the tide.D
A ship has to turn to stem the tide so she can get alongside a wharf.
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