更多"In the fire main system, quick clea"的相关试题:
[单项选择]A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.
A. a low velocity spray applicator
B. a water spray or solid stream
C. at least two spray patterns of water
D. at least 25 psi delivered pressure
[单项选择]What is the most vulnerable part of the fire main system on board an offshore rig?（）
A. The fire pump
B. Exposed hard piping
C. The hydrant valve
D. The fire hose
[单项选择]Each part of the fire-main system located on an exposed deck must be（）.
A. protected against freezing
B. locked to prevent theft
C. numbered sequentially
D. pressurized at all times
[单项选择]A cutoff valve in the fire-main system of a ship may be closed to protect the portion of the system on an exposed deck from（）.
A. damage from crane operations
B. being used for wash down purposes
C. accidental diversion of flow to wrong location
D. freezing
[单项选择]（）is main emergency fire system in all merchant ships.
A. CO2 system
B. Foam system
C. Dry power system
D. Water supply system
[单项选择]If you are fighting a fire below the main deck of your vessel，which action is most importantconcerning the stability of the vessel? （）
A. Shutting off electricity to damaged cables
B. Pumping fire-fighting water overboard
C. Maneuvering the vessel so the fire is on the lee side
D. Removing burned debris from the cargo hold
[单项选择]Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon（）.
A. cargo pump failure
B. blower failure
C. deck seal low water level
D. low inert gas temperature
[单项选择]The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE? （）
A. Fusible links must be replaced if a damper is activated
B. Fusible links are tested by applying a source of heat to them
C. Fusible links must be replaced at every inspection for certification
D. A fusible link will automatically open after a fire is extinguished and reset the damper
[单项选择]Which fire detection system is actuated by sensing a heat rise in a compartment?（）
A. Manual fire detection system
B. Automatic fire detection system
C. Smoke detection system
D. Watchman's supervisory system
[单项选择]A branch line valve of a fire extinguishing system on a ship must be marked with the（）.
A. maximum pressure allowed at that branch
B. name of the space or spaces which it serves
C. date of the last maintenance inspection
D. pressure needed to maintain an effective stream at that point
[单项选择]A lateral system buoy displaying a quick light（）.
A. should be passed close aboard on either side
B. indicates that special caution is required
C. is used at a channel bifurcation or junction
D. is painted with red and white vertical stripes
[单项选择]Fire alarm system thermostats are actuated by（）.
A. smoke sensors
B. the difference in thermal expansion of two dissimilar metals
C. pressure loss due to air being heated
D. an electric eye which actuates when smoke interferes with the beam
[单项选择]The main causes of fire on board ships are （）
A. oil leakage in engine-room
B. hot work (welding, cutting, etc)
C. static electricity
D. all of the above
[单项选择]A towing vessel’s fire detection system may be certified to comply with the Coast Guard’s towing vessel fire protection regulations by（）.
A. a Coast Guard inspector
B. a registered professional engineer
C. the owner or Master of the vessel
D. a licensed electrician
[单项选择]The main source of fuel injection system malfunctions is （）
A. improper adjustments
B. contaminated fuel
C. coated fuel lines
D. excessive vibration
[单项选择]The main function of the lubrication system in to enable （） of a film of oil between the moving parts.
A. the information
B. the formation
C. the scatter
D. the friction
[单项选择]Fire dampers prevent the fire spreading through the process of （）.
A. convection
B. conduction
C. radiation
D. direct contact
