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单选题
In moving forward, a ship imparts forward motion to the water at the stems, this is known as （）.
A
the speed of the vessel
B
the speed of the propeller
C
the wake
D
the wake fraction
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In moving forward, a ship imparts forward motion to the water at the stems, this is known as _____.A.the speed of the vesselB.the speed of the propellerC.the wakeD.the wake fraction
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单选题We can’t feel that we are going forward as everything _____ us is moving _____ the same speed.A
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单选题The ship’s draught forward is slightly deeper than the draught aft．This condition is called（）in shipping terms.A
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trim by the sternC
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单选题Two tugs are helping the ship. One is pulling from forward, the other is （）.A
pulling aftB
pushing foreC
pushing aftD
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单选题The ship’s draught forward is same as her draught aft.This condition is named as（）.A
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downward and inward flowB
downward and outward flowC
upward and inward flowD
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单选题（）length of the ship measured from extreme points of the ship forward and aft.A
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After perpendicularC
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pitchingB
yawingC
rollingD
tracking
考题
单选题Due to the shape of the（），whereby forward- and aft ship are differently shaped，a trim correction on the draft measurement has to be done.A
spheroidB
loxodromeC
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考题
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head reachC
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单选题Which mooring line prevents sideways motion of a vessel moored to a pier（）.A
A line led forward from the bowB
A line led aft from the bowC
A line led in the same direction as the keelD
A line led at a right angle to the keel
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