A.boiler drums
B.hot wells
C.condensers
D.evaporators
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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
A.a liquid
B.a pressure
C.a temperature
D.none of the above
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（） is not installed on the main switchboar.
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Cold weather starting of a diesel engine may be made easier by（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The shipboard oil pollution emergency plan will be invalid after （）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The cetane rating of diesel fuel is an indication of the （）
Which of the following items don’t belong to dock repair works?（）