Fire dampers prevent the fire spreading through the process of （）.

相似题目

• The function of damper windings in a synchronous motor is to （）.

  A . eliminate slippage B . provide excitation C . provide starting torque D . increase efficiency

  查看最佳答案

• To prevent the spread of fire by convection you should （）.

  A . remove combustibiles from direct exposure B . cool the bulkhead around the fire C . close all openings to the area D . shut off electrical power

  查看最佳答案

• Fusible-link fire dampers are operated by（）.

  A . 8the heat of a fire melting the link B . a break-glass and pull-cable system C . electrical controls on the bridge D . a mechanical arm outside the vent duct

  查看最佳答案

• In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by （）.

  A . convection B . conduction C . radiation D . ventilatio

  查看最佳答案

• Your vessel is equipped with a fixed C02 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）.

  A . Use the C0 system and evacuate the engine room B . Use the fire main system and evacuate the engine room C . Evacuate the engine room and use the C0 system D . Evacuate the engine room and use the fire main system

  查看最佳答案

• Water in the fuel can prevent the engine from starting, prevent it from developing full power, or （）

  A . run at an irregular speed B . create high lube oil temperature C . cause the engine to over-speed D . cause blue smoke in the exhaust

  查看最佳答案

• The fire of burning plastics is classified as （） fire.

  A . Class A B . Class B C . Class C D . Class D

  查看最佳答案

• Fire dampers prevent the spread of fire by（）.

  A . convection B . conduction C . radiation D . direct contact

  查看最佳答案

• The fire of burning paper is classified as（）fire.

  A . Class A B . Class B C . Class C D . Class D

  查看最佳答案

• The spread of fire is prevented by（）.

  A . cooling surfaces adjacent to the fire B . leaving combustibles in the endangered area C . increasing the oxygen supply D . All of the above

  查看最佳答案

• A viscous damper, as used on a marine diesel, is a sealed precision built device which dampens the torsional vibrations in the （）.

  A . camshaft B . flywheel C . crankshaft D . thrust shaft

  查看最佳答案

• The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?（）

  A . A fusible link will automatically open after a fire is extinguished and reset the damper B . Fusible links must be replaced at every inspection for certification C . Fusible links are tested by applying a source of heat to them D . Fusible links must be replaced if a damper is activated

  查看最佳答案

• To prevent the spread of fire by conduction, you should （）.

  A . cool the bulkheads around the fire B . remove combustibles from direct exposure C . close all openings to the area D . shut off all electric power

  查看最佳答案

• The spread of fire is NOT prevented by（）.

  A . shutting off the oxygen supply B . cooling surfaces adjacent to the fire C . removing combustibles from the endangered area D . removing smoke and toxic gases by ensuring adequate ventilatio

  查看最佳答案

• The air reservoirs must have （） fitted to prevent rupture in the event of fire.

  A . high pressure alarm B . fire alarm C . extinguishers D . fusible plug

  查看最佳答案

• When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.

  A . air from contacting the oil vapors B . permitting re-ignition boiling of the heated oil C . spontaneous combustion below the oil surface D . toxic fumes from escaping to the surface

  查看最佳答案

• The fire of fuel oil is classified as（） fire.

  A . Class A B . Class B C . Class C D . Class D

  查看最佳答案

• Automatic fire dampers in ventilation systems are operated by a（）.

  A . remote operated valve B . fusible link C . CO system pressure switch D . heat or smoke detector

  查看最佳答案

• The fire of sodium is classified as（） fire.

  A . Class A B . Class B C . Class C D . Class D

  查看最佳答案

• The class of fire on which a blanketing effect is essential to extinguish the fire is （）.

  A . class A B . class B C . class C D . class D

  查看最佳答案

• According to this passage, in order to prevent forest fire, _______.

  查看最佳答案

• Fires rely on , , and , the three components of what fire crews refer to as “the fire triangle.”

  查看最佳答案