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 off
B.Stripping systems are generally eliminated for the purposes of cargo handling
C.In recent years deep well pumps have become increasingly unpopular in product tankers and medium size crude ships
D.There is no danger of damaging the pump from overheating
第1题：
Which statement is TRUE concerning the flash point of a substance ________．
A.It is lower than the ignition temperature
B.It is the temperature at which a substance will spontaneously ignite
C.It is the temperature at which a substance，when ignited，will continue to burn
D.It is the temperature at which the released vapors will fall within the explosive range
第2题：
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited ________．
A.It is required on all vessels
B.It may be located in a conspicuous place in the wheelhouse
C.It may be located at the bilge and ballast pump control station
D.All of the above
第3题：
Concerning baby-sitting and managing a paper route, which of the following statement is true?
A． Both call for daily service.
B． Both call for a sense of responsibility.
C． Neither is affected by bad weather.
D． Neither is helpful to character development.
第4题：
Which statements concerning the switch construct are true？（）
第5题：
Which statement concerning GPS is TRUE ________．
A.It cannot be used in all parts of the world
B.There are 12 functioning GPS satellites at present
C.It may be suspended without warning
D.Two position lines are used to give a 2D fix
第6题：
Which statement is correct concerning the carriage of coal in bulk ________．
A.Coal should be vented with surface ventilation only
B.Because of its inherent vice，coal should not be loaded wet
C.Dunnage should be placed against ship's sides and around stanchions
D.Through ventilation，as well as surface ventilation，should be provided whenever possible
第7题：
Which statement is TRUE concerning combustible gas indicators ________．
A.One sample of air is adequate to test a tank
B.They do not work properly where there is a lack of oxygen
C.They will detect a lack of oxygen
D.They are calibrated to read the percentage chance of explosion
第8题：
Which statement is NOT true?
A.In a simple vane pump, the rotor and cam ring are exactly concentric
B.Balanced vane pump has an elliptical cam ring
C.Liquid in both gear pump and vane pump are forced out to the outlet.
D.Balanced vane pumps can work at a higher pressure than the simple vane pump
第9题：
Concerning the identification signal for a pilot vessel, in fog, which statement is TRUE?___.
A.When at anchor, the pilot vessel is only required to sound anchor signals
B.The identification signal must be sounded any time the pilot vessel is underway
C.The pilot vessel may only sound the identity signal when making way
D.All of the above
第10题：
Which statements are true regarding table compression？（）