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单项选择题 The emergency signal for fires is sounded on the sh...
单项选择题 A carbon dioxide fire extinguisher should be recharge...
单项选择题 A carburetor is required to have a safety device ca...
单项选择题 A Certificate of Inspection issued to a small passen...
单项选择题 A class B fire is most successfully fought by（）.
单项选择题 A class C fire would be burning（）.
单项选择题 A combustible gas indicator meter is calibrated to r...
单项选择题 A cutoff valve in the fire-main system of a ship ...
单项选择题 A definite advantage of using water as a fire extin...
单项选择题 A fire has broken out on the stern of your vessel...
单项选择题 A fire hose has a（）.
单项选择题 A fire in a ballast pumproom can be brought under ...
单项选择题 A fire in electrical equipment should be extinguished...
单项选择题 A fire is discovered in the forepeak of a vessel a...
单项选择题 A fire main system must have enough fire hydrants s...
单项选择题 A fire must be ventilated（）.
单项选择题 A fire pump may be used for other purposes if（）.
单项选择题 A fire starting by spontaneous combustion can be exp...
单项选择题 According to the T-Boat regulations the reason for ...
单项选择题 Automatic fire dampers in ventilation systems are ope...
单项选择题 Automatic fire dampers in ventilation systems are ope...
单项选择题 Backfire flame arrestors are installed on（）.
单项选择题 Before a tank is to be crude oil washed，the oxygen...
单项选择题 Blocking open or removing fire dampers can cause（）...
单项选择题 Cargo transfer operations on a tanker need NOT be s...
单项选择题 CO2 extinguishes a fire by（）.
单项选择题 Combustible gas indicators measure the presence of co...
单项选择题 Control of fire on a ship should be addressed（）.
单项选择题 Control of flooding should be addressed（）.
单项选择题 Controls for a fixed carbon dioxide system shall be...
单项选择题 Convection spreads a fire by（）.
单项选择题 Dry chemical extinguishers extinguish class B fires t...
单项选择题 Dry chemical fire extinguishers are effective on whic...
单项选择题 Due to the hazards involved with Halon extinguishers...
单项选择题 During a fire drill on a ship，what action is requi...
单项选择题 During a training exercise a submarine indicating tha...
单项选择题 During the required periodic abandon ship drill aboar...
单项选择题 Each fire hose coupling on a ship must have threads...
单项选择题 Each fire hydrant must have at least one spanner an...
单项选择题 Each fire hydrant serving machinery spaces containing...
单项选择题 Each fire pump on a ship must have a pressure gaug...
单项选择题 Each fireman’s outfit and its spare equipment on a...
单项选择题 Each hand portable fire extinguisher must be marked ...
单项选择题 Each hose in the fuel transfer system for helicopter...
单项选择题 Each part of the fire-main system located on an ex...
单项选择题 If，during helicopter refueling operations，fuel is spi...
单项选择题 On a hydrocarbon flammability chart the line which e...
单项选择题 A cabinet or space containing the controls or valves...
单项选择题 Which statement is TRUE concerning spare charges for...
单项选择题 No outlet on a fire hydrant may point above the ho...
单项选择题 The danger of a charged hose left unattended on dec...
单项选择题 （），as the chemical extinguisher agent，should be us...
单项选择题 A branch line valve of a fire extinguishing system ...
单项选择题 A CO2 extinguisher on a ship which has lost 10%...
单项选择题 A CO2 portable extinguisher is annually checked by（...
单项选择题 A combination or all-purpose nozzle produces（）.
单项选择题 A fire starts on your vessel while refueling. You ...
单项选择题 A fixed CO2 system on a ship with a capacity of ...
单项选择题 A foam-type portable fire extinguisher is most usefu...
单项选择题 A foam-type portable fire extinguisher would be most...
单项选择题 A fuel line breaks，sprays fuel on the hot exhaust ...
单项选择题 A galley grease fire on the stove may be extinguish...
单项选择题 A GROUP OF CREW MEMBERS TRAINED FOR FIGHTING FLOODIN...
单项选择题 A large oil fire on the deck of a ship can be fo...
单项选择题 A marine chemist issues gas free certificates and is...
单项选择题 A passenger vessel is required to have a supervised...
单项选择题 A portable dry chemical fire extinguisher discharges ...
单项选择题 A portable foam (stored-pressure type) fire extingu...
单项选择题 A ship helicopter landing deck on which fueling oper...
单项选择题 A ship must have a self-contained breathing apparatu...
单项选择题 A small fuel spillage has occurred during helicopter...
单项选择题 A spanner is a（）.
单项选择题 A spring line is（）.
单项选择题 A squeeze-grip type carbon dioxide portable fire ext...
单项选择题 A vessel is constructed with a steel hull and an a...
单项选择题 According to the regulations，what fire safety control...
单项选择题 After extinguishing a fire with CO2，it is advisable...
单项选择题 After extinguishing a paint locker fire using the fi...
单项选择题 All of the following are part of the fire triangle...
单项选择题 All portable fire extinguishers must be capable of b...
单项选择题 An ABC dry chemical fire extinguisher would be LEAST...
单项选择题 An advantage of a dry chemical over a carbon dioxid...
单项选择题 An aircraft has indicated that he wants you to chan...
单项选择题 An effective method for moving patients with spinal ...
单项选择题 An engine compartment gasoline fire requires which ty...
单项选择题 An extinguishing agent which effectively cools，dilutes...
单项选择题 An important step in fighting any electrical fire is...
单项选择题 An inert gas system is designed to reduce the possi...
单项选择题 An inert gas system on a tanker should be used to...
单项选择题 Any extinguishing agent used on a Class C fire must...
单项选择题 Any firefighting equipment that is carried in additio...
单项选择题 Any ship damaging a pipe could（）an immediate danger...
单项选择题 As an extinguishing agent，foam（）.
单项选择题 As compared to carbon dioxide，dry chemical has which...
单项选择题 At night while the ship is tied up to the dock，a...
单项选择题 At the required fire drill conducted aboard a ship，...
单项选择题 Accumulations of oily rags should be（）.
单项选择题 Records of tests and inspections of a cargo vessel’...
单项选择题 A fifteen-pound CO2 extinguisher（）.
单项选择题 A fire in a ballast pumproom can be brought under ...