A.a sewage treatment plant
B.the extended aeration process
C.the liquor
D.the bubbling air
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A.in boiler drums
B.in refrigerating plants
C.in starting air pipes
D.in air coolers
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
最新試題
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
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.
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The treatment of the fuel oils involves storage, heating, filtering and（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which of the following items don’t belong to dock repair works?（）
The main purpose of port State control is not to（）