A.indicated horsepower
B.brake horsepower
C.dynamic horsepower
D.net horsepower
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A.tow strain
B.catenary length
C.being in step
D.Williamson's Tow
A.At the head of the tow
B.75m from the head of the tow
C.120m from the head of the tow
D.180m from the head of the tow
A.yaw
B.surge
C.sway
D.swing
A.only one high and one low water occur during a lunar day
B.the high tide is higher and the low tide is lower than usual
C.the high tide and low tide are exactly six hours apart
D.two high tides occur during a lunar day
A.bar securing a cargo port
B.centerline vertical bulkhead
C.deep beam
D.spanner stay
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A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）
A vessel proceeding along the bank of a river or channel has the tendency to（）.
On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）.
When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.
Topside icing that blocks freeing ports and scuppers（）.
Before entering an ice area，the ship should be（）.
Any vessel shall，if the circumstances of the case admit，avoid（）in a narrow channel.
Small floes of rough，hummocky sea ice capable of damaging a vessel（）.
In most cases，when a large merchant vessel enters shallow water at high speed the（）.
A vessel which is being assisted by an icebreaker would display a flag hoist consisting of the code numeral 4 when the vessel（）.