A.in boiler drums
B.in refrigerating plants
C.in starting air pipes
D.in air coolers
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A.boiler drums
B.hot wells
C.condensers
D.evaporators
A.high pressure alarm
B.fire alarm
C.extinguishers
D.fusible plugs
A.filled
B.evacuated
C.compressed
D.charged
A.greater
B.smaller
C.better
D.worse
A.hydraulic head
B.static head
C.heat energy
D.steam
最新試題
The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()
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Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()
Which one is NOT the ‘clear grounds’ for a more detailed inspection?()
()connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Which of the following items don’t belong to dock repair works?()