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1题:
A.It requires the RELOAD, FILE, and DROP privileges
B.It closes and reopens all log files
C.It closes and sends binary log files to slave servers
D.It flushes dirty pages in the buffer pool to the REDO logs
第2题:
Which statement concerning carbon dioxide is FALSE ________.
A.It displaces the oxygen in the air
B.It cannot be seen
C.It cannot be smelled
D.It is safe to use near personnel in a confined space
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 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5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6题:
The flash point of a petroleum product is an indication of its ______.
A.viscosity
B.pour point
C.volatility
D.lower explosive limit
第7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8题:
A.It can be any class.
B.No class has access to base.
C.The class must belong to the geometry package.
D.The class must be a subclass of the class Hypotenuse.
第9题:
Which statement is TRUE concerning inert gas systems on tankers ________.
A.Flue gases from the ship's boilers are used in some systems
B.The gas is helium
C.Using the system accelerates the rusting of the tanks
D.All of the above
第10题:
Which statement is TRUE of a gasoline spill ________.
A.It is visible for a shorter time than a fuel oil spill
B.It is not covered by the pollution laws
C.It does little harm to marine life
D.It will sink more rapidly than crude oil