A.signaling that all personnel are clear before lifting or lowering material
B.Examining material for sharp edges or protruding points before handling
C.Closing, tagging, or securing valves that permit entrance of steam, water, or air into a fitting or other equipment
D.Throwing materials from high places to the deck
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A.The expansion tank should be topped off
B.The thermostatic water regulating valves should be manually opened
C.The fuel filters should be changed
D.The engine should be turned over slowly with the indicator cocks open
A.Full Ahead
B.Half Ahead
C.Full Astern
D.Half Astern
A.overheating of the lube oil
B.over-speeding of the motor
C.wear on the braking system
D.damage to the teeth
A.Send the wiper into the well with only a scoop and pail
B.Remove the bilge manifold valve and attempt to back flush the line
C.Simultaneously operate all available bilge pumps
D.It is only necessary to transfer half the contents of a drum of degreaser into the bilge well
A.Send the wiper into the well with only a scoop and pail
B.Remove the bilge manifold valve and attempt to back flush the line
C.Simultaneously operate all available bilge pumps
D.It is only necessary to transfer half the contents of a drum of degreaser into the bilge well
最新試題
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Diesel engine air start system check valves are opened by （）
The treatment of the fuel oils involves storage, heating, filtering and（）
The cetane rating of diesel fuel is an indication of the （）
（） is not installed on the main switchboar.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）