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单选题
The thrust from the propeller to the hull of the ship is transferred by（）
A
tie rod
B
thrust block
C
bedplate of main engine
D
frame of main engine
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单选题What is the function of the thrust bearing?（）A
Prevents lateral movement of the slow speed gearB
Transmits propeller thrust to the hullC
Keeps spring bearings in lineD
Prevents main reduction gear axial movement
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单选题That（）is not caused by shallow water.A
turning ability deterioratesB
virtual mass increasesC
the effect of the propeller transverse thrust on yaw altersD
the ship will turn with its head towards the wind
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单选题For a propeller direct driven by the engine,（）.A
the thrust pads are while metal faced on both sidesB
the thrust pads are while metal faced only on the forward sideC
the thrust pads are while metal faced only on the after sideD
intermediate shaft usually supported by a plummer block
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单选题If the buoyant force on a ship’s hull is equal to the displacement tonnage，the ship will（）.A
require ballastB
be down by the headC
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单选题On a single-screw vessel the stern frame（）.A
furnishes support to the rudder，propeller shaft，and transom frameB
provides foundations for after mooring winchesC
provides foundations for the main propulsion enginesD
transfers the driving force of the propeller to the hull
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单选题The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.A
air gapB
freeboardC
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water depth
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单选题Our ship has not been to shipyard for a long time, the fouling on the ship’s hull greatly decreases her（）.A
resistanceB
weightC
speedD
displacement
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单选题（）is applied to the area of the ship’s hull which is out of water when the ship is loaded.A
Boottopping paintB
Topside paintC
Bottom paintD
Primer
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单选题In the event of damage to the DEEP WATER SHIP which results in flooding to one of the lower-hull tanks，pump from（）.A
nearby damaged tanksB
nearby undamaged tanks containing ballastC
tanks on the opposite cornerD
the opposite trim tank
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单选题A thrust bearing is used with a propulsion diesel engine to （）.A
control axial movement of the crankshaftB
transmit engine thrust to the propeller shaftC
absorb vibrations in the propeller shaftingD
prevent propeller thrust from being transmitted to the hul
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单选题If the buoyant force on a ship’s hull is equal to the displacement tonnage, the ship cause（）.A
require ballastB
be down by the headC
sinkD
float
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单选题A thrust block is designed to（）.A
transmit the thrust of the engine to the propellerB
transmit the thrust of the propeller to the vesselC
absorb the shock of wave pressure at the bowD
be placed between the engines and the foundation to absorb the vibration
考题
单选题Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed （）.A
apparent slipB
tree slipC
pitchD
propulsive efficiency
考题
单选题Where a propeller shaft passes through the hull，water is prevented from entering by means of a（）.A
stuffing boxB
propeller bossC
seacockD
stop-water
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单选题Kort nozzles are installed around the propellers of some vessels to（）.A
Increase the thrust of the propellerB
Protect the propeller from striking sawyersC
Prevent the propeller from striking barges towed on the shipD
Prevent the propeller from touching bottom in low water
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单选题When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations √This is done to （）A
maintain alignment when the ship’s hull is working in heavy seasB
ensure engine vibrations correspond to the natural frequency of the hullC
permit the engine to expand away from the driven equipment as the engine heats up and expandsD
maintain engine thrust bearing clearances
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单选题The athwartship hull structural members of a ship are（）.A
stringersB
girdersC
breasthooksD
deck beams
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