A.Securing equipment against slipping or drifting
B.Operating machinery at its recommended speed
C.Repairing loose handles on tools before using
D.Using tools for purpose for which they are not designed
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A.approved by the Coast Guard
B.high carbon steel
C.fixed with a ferrous cover
D.nonsparking
A.the forced ventilating system is operating
B.the cargo pumps are secured
C.no monocarbon gases are present
D.the oily water separator is de-energized
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
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
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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
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Using a file without a handle may result in （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Which of the following items don’t belong to dock repair works?（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Diesel engine air start system check valves are opened by （）