On a hydrocarbon flammability chart th...

单项选择题On a hydrocarbon flammability chart the line which extends from 0% to 21.8% oxygen，lying tangent to the flammability range，is called the（）.

A.minimum oxygen content line
B.critical displacement line
C.critical dilution line
D.upper threshold limit

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1.单项选择题If，during helicopter refueling operations，fuel is spilled on clothing，the person should first（）.

A.see the medic immediately
B.spray himself with foam or CO₂
C.complete his task and then see the medic
D.remove the clothing and wash

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2.单项选择题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

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3.单项选择题Each hose in the fuel transfer system for helicopter refueling must meet the standards of the（）.

A.Federal Aviation Administration
B.Corps of Engineers
C.National Fire Protection Association
D.National Transportation Safety Board

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4.单项选择题Each hand portable fire extinguisher must be marked with（）.

A.the name of the vessel on which it is located
B.the date that it was installed
C.the names of the individuals qualified to use it
D.an identification number

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5.单项选择题Each fireman’s outfit and its spare equipment on a vessel must be stowed（）.

A.in a locked cabinet in the machinery space
B.in an unlocked cabinet in the machinery space
C.in a separate and accessible location
D.at a fire hydrant location

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6.单项选择题Each fire pump on a ship must have a pressure gauge located at（）.

A.the pump discharge
B.the manifold connection
C.each fire station discharge
D.the pump station

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7.单项选择题Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.

A.fireman's outfit
B.low-velocity spray applicator
C.marine strainer
D.pick axe

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8.单项选择题Each fire hydrant must have at least one spanner and at least one（）.

A.hose rack or reel
B.all purpose nozzle
C.foam applicator
D.pick axe

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9.单项选择题Each fire hose coupling on a ship must have threads that meet the specifications of the（）.

A.American Petroleum Institute
B.National Standard Firehose Coupling
C.American Society of Mechanical Engineers
D.Underwriter's Laboratories，Inc

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10.单项选择题During the required periodic abandon ship drill aboard a ship，each person not assigned duties in the muster list is（）.

A.instructed in the use of portable fire extinguishers
B.shown a video demonstrating lifeboat launching
C.instructed in the use of life jackets
D.not required to attend the boat drill

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