A Kort nozzle is a(n) ______.
A.hollow tube surrounding the propeller used to improve thrust
B.nozzle attached to a firefighting hose
C.intake valve on a diesel engine
D.piston cylinder on a diesel engine
第1题：
To improve the quality of our products ,we asks for suggestions _______had used the products.
A.whoever
B. who
C. whichever
D.which
第2题：
The moisture equilibrium chart can be used to determine the ______．
A.Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium exists
B.Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodity
C.Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargo
D.Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo
第3题：
A thrust bearing is used with a propulsion diesel engine to ____.
A.control axial movement of the crankshaft
B.transmit engine thrust to the propeller shaft
C.absorb vibrations in the propeller shafting
D.prevent propeller thrust from being transmitted to the hull
第4题：
initially connect the compressed air nozzle to the inflation tube
pull the inflation lanyard
connect the hand pump to the inflation tube and pump it up
connect the helium nozzle to the inflation tube
第5题：
Kort nozzles are installed around the propellers of some vessels to ______.
A.increase the thrust of the propeller
B.protect the propeller from striking sawyers
C.protect the propeller from striking barges towed on the hip
D.protect the propeller from touching bottom in low water
第6题：
A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a ______.
A.heavy-walled drill pipe
B.tool joint
C.down hole tool
D.drill collar
第7题：
What is a cofferdam ________．
A.Tube fitted to an ullage hole
B.Area the product is loaded into
C.Void or empty space separating two tanks
D.Opening in the deck used for cleaning a tank
第8题：
When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?
A.The propeller hub taper and shaft keyway should be inspected for cracks or corrosion
B.The stern bearing alignment with the stern frame should be checked
C.The interior of the stern tube should be inspected for leaks
D.The shaft liner should be removed and inspected for cracks
第9题：
erosion
corrosion
pitting
dezincification
第10题：
fight an electrical fire
fight a magnesium fire
eliminate smoke from a compartment
All of the above