A.four-stroke
B.two-stroke
C.slow speed
D.reversible
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A.defrosting
B.de-oiling
C.demulsifying
D.dehumidifying
A.overlap
B.crush
C.lap or lead
D.protrusion
A.spraying directly on the base of the fire
B.flowing the foam down a vertical surface
C.sweeping the fire before you with the foam
D.spraying directly on the surface of the fire
A.to increase
B.to speed up
C.to prevent
D.to reduce
A.in order that
B.because of
C.in order to
D.owing to
最新試題
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
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Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
The treatment of the fuel oils involves storage, heating, filtering and（）