A.high exhaust temperature
B.low exhaust temperature
C.fuel knock in each cylinder
D.mechanical knock in each cylinder
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A.sea water temperature must never be warmer than 40℃
B.jacket water pressure should always be greater than the sea water pressure
C.jacket water temperature must always be less than 60℃
D.jacket water pressure must always be less than the sea water pressure
In a medium speed diesel engine, a trunk type piston may be cooled by（）
Ⅰ.oil circulation though passages in the piston crown
Ⅱ.heat transfer through piston rings and liner wall
A.Ⅰ only
B.Ⅱ only
C.either Ⅰ or Ⅱ
D.neither Ⅰ or Ⅱ
A.power the after-coolers
B.power the turbocharger
C.reduce the cylinder scavenge effect
D.cool the turbocharger
A.corrosive deterioration of a bearing
B.inadequate air filtration
C.excessive ring and liner wear
D.excessive cooling of lubricating oil
A.lower than normal cylinder pressure and low exhaust temperature
B.lower than normal cylinder pressure and high exhaust temperature
C.higher than normal cylinder pressure and low exhaust temperature
D.higher than normal cylinder pressure and high exhaust temperature
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Flame failure in an automatically fired auxiliary boiler can from a/an （）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
（） is not installed on the main switchboar.
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
The ISPS Code consists of a mandatory section-Part A, which shows（）
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 （）
（）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?（）