考题
Which of the following is the stated proper sequence before commencing cargo operations aboard Ro-Ro vessels?A.Start ventilation,lower the ramp,notify engine roomB.Lower the ramp,start ventilation,notify engine roomC.Notify engine room,lower the ramp,start ventilationD.Start ventilation,notify engine room,lower the ramp
考题
Which statement is TRUE concerning protection of double bottom tanks against excessive pressure?A.Each vent for the tank must be equal to the area of the tank filling lineB.The tanks must be protected by overflowsC.The total area of the vents or the overflow shall be at least equal to the area of the fill lineD.There must be twice as much vent area as the area of the fill line
考题
Which statement is TRUE concerning the flash point of a substance ________.A.It is lower than the ignition temperatureB.It is the temperature at which a substance will spontaneously igniteC.It is the temperature at which a substance,when ignited,will continue to burnD.It is the temperature at which the released vapors will fall within the explosive range
考题
Which statement about entry into a space that has been sealed for a long time is TRUE ________.A.A tank that has been used to carry hazardous liquids should be tested for oxygen content,toxicity,and explosive gasesB.You can safely enter the space without a breathing apparatus if the oxygen content exceeds 14%C.The natural ventilation through the installed vents is sufficient to provide the proper oxygen contentD.The heat of the sun on upper ballast tanks,such as in a bulk carrier,may generate carbon monoxide
考题
Which statement is correct concerning the carriage of coal in bulk ________.A.Coal should be vented with surface ventilation onlyB.Because of its inherent vice,coal should not be loaded wetC.Dunnage should be placed against ship's sides and around stanchionsD.Through ventilation,as well as surface ventilation,should be provided whenever possible
考题
Gasoline fuel tank vents should terminate ______.A.In the engine compartmentB.In the fuel tank spaceC.Above or outside the hullD.At the most convenient location
考题
Which statement is TRUE concerning deep well self-priming pumps ________.A.When loading oil cargo,it is always loaded via the discharge line through to the pump until the tank is topped offB.Stripping systems are generally eliminated for the purposes of cargo handlingC.In recent years deep well pumps have become increasingly unpopular in product tankers and medium size crude shipsD.There is no danger of damaging the pump from overheating
考题
You are on a tanker designed to carry molten sulfur.Which statement is TRUE ________.A.There must be two portable toxic vapor detectors on boardB.The cargo tank ventilation system must maintain the H2S vapor concentration at 1.85% or more by volumeC.Cargo temperature may be taken by portable thermometersD.The pressure in the heating coils in the tanks must be less than that of the cargo exerted on them
考题
Which statement about the DVS engine is true?()A、the DVS engine can useWebroot and McAfee scanning in parallelB、the DVS engine generates the WBRSC、the DVS engine never inspects the client HTTP requestD、the DVS engine is only used for Layer 4 traffic monitoring
考题
单选题Which of the following is the stated proper sequence before commencing cargo operations aboard Ro-Ro vessels?()A
Start ventilation,lower the ramp,notify engine roomB
Lower the ramp,start ventilation,notify engine roomC
Notify engine room,lower the ramp,start ventilationD
Start ventilation,notify engine room,lower the ramp
考题
单选题You are loading a cargo tank on your container ship. The tank displays the red label shown. Which statement is TRUE? ()A
The tank contains propyleneB
The tank's volume is 1077 cubic feetC
There are three tanks in the shipmentD
The tank contains an oxidizing material
考题
单选题Which statement is TRUE concerning the gooseneck().A
It is a sailing maneuver which brings the vessel's head through the windB
It connects the boom to the mast and allows the boom to swing freelyC
It is a sailing condition where there is a loss of air flow over the sailsD
None of the above
考题
单选题You are on a containership. Which statement about the stowage of hazardous materials in containers is TRUE?().A
The containers provide automatic segregation of hazardous materials except for class A explosivesB
All packages within a container must be marked This End Up to indicate the correct stowageC
A refrigerated container with a fuel tank containing a flammable liquid must be stowed on deckD
Packages of liquids within a container should be stowed on top of packages of solids to prevent crushing
考题
单选题When ship navigating in rough sea, the first measure taken by the chief engineer to prevent the overload should be()A
cleaning fuel oil, lubricating oil and seawater filterB
reducing fuel feeding of the main engine appropriately or reducing the pitch angle of propellerC
using low sea chestD
closing the skylight and the ventilation opening, which doesn’t affect the normal work of equipments
考题
单选题Which of the following statements is true concerning the cetane number rating of diesel fuel? ()A
The cetane number is obtained by comparing the fuel with cetane a colorless liquid hydrocarbonB
The higher the cetane number, the shorter the ignition lagC
The highest cetane number of fuel is 100D
All of the above
考题
单选题Which statement is TRUE concerning the ventilation of engine and fuel tank compartments on uninspected towing vessels using fuel with a flash point of 100°F?()A
There shall be at least 3 ventilator ducts open to the atmosphereB
At least one exhaust duct shall extend from the open atmosphere to the lower portion of the bilgeC
At least one intake duct shall extend from the open atmosphere to the lower portion of the bilgeD
Only vessels using fuel with a flash point above 110°F need ventilate engine and fuel compartments
考题
单选题If emergency welding repairs must be made to the upper area of a fuel tank, the tank and/or adjacent compartments may need to be ()A
gas freedB
inertedC
filled with waterD
all of the above as necessary
考题
单选题Which step is NOT generally taken when gas-freeing a tank?().A
Washing the tank interior with sea waterB
Application of degreasing solventsC
Removal of corrosion products and sludgeD
Fresh air ventilation
考题
单选题Which of the following is true about the fuel injection with an ordinary diesel engine?()A
The process begins after TDCB
The process ends before TDCC
When the piston is near to the TDC the fuel injection endsD
None of the above is true
考题
单选题Which statement about the DVS engine is true?()A
the DVS engine can useWebroot and McAfee scanning in parallelB
the DVS engine generates the WBRSC
the DVS engine never inspects the client HTTP requestD
the DVS engine is only used for Layer 4 traffic monitoring
考题
单选题Which of the following statements concerning fuel atomization in a diesel engine cylinder is correct?()A
The greater the atomization, the greater the penetrationB
The greater the atomization, the less the penetrationC
The degree of atomization has nothing to do with the degree of penetrationD
Atomization and penetration are one and the same
考题
单选题When fueling has been completed().A
the fuel tank fill pipe should be left open to allow vapors to vent from the tankB
the engine should be started immediately to prevent vapor lock in the fuel lineC
all hatches should be opened and all compartments should be ventilatedD
open the fuel line and drain a small amount of gasoline into the bilge to clear the line of sediment
考题
单选题Which statement is TRUE concerning gasoline vapors on board a vessel().A
They are heavier than air and will settle in the lowest part of the vesselB
They are lighter than air and will settle in the highest part of the vesselC
They should be vented into the engine to improve combustionD
They should be vented into the wheelhouse
考题
单选题Gasoline fuel tank vents should terminate().A
in the engine compartmentB
in the fuel tank spaceC
above or outside the hullD
at the most convenient location
考题
单选题Which statement concerning Montauk Point Light is TRUE().A
The light comes on at sunsetB
There is an emergency light if the main light is extinguishedC
The height of the light is 24 feetD
The tower is painted with black and white stripes
考题
单选题Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? ()A
Each vent for the tank must be equal to the area of the tank filling lineB
The tanks must be protected by overflowsC
The total area of the vents or the overflow shall be at least equal to the area of the fill lineD
There must be twice as much vent area as the area of the fill line
考题
单选题Which statement is TRUE concerning fuel vapors on a vessel().A
Fuel vapors gather in the lowest portions of the vesselB
Fuel vapors can only be ignited by an open flameC
Vent outlets should be located above the level of the carburetor air intakeD
None of the above
考题
单选题Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?().A
Spare charges shall be carried for at least 50 percent of each size and variety required on boardB
If the unit cannot be charged by the vessel's personnel,one spare unit shall be carried in lieu of spare chargesC
Spare charges shall be stowed in watertight containers on deckD
Regulations concerning spare charges do not apply to unmanned barges