A.straw
B.booms
C.skimmers
D.chemical dispersants
您可能感興趣的試卷
你可能感興趣的試題
A.The tank is safe to enter
B.The tank is especially dangerous to enter
C.Carbon monoxide is present
D.Water vapor present when the tank was sealed has oxidized
A.class A
B.class B
C.class C
D.class D
A.steel surfaces consume oxygen by rusting
B.sealed tanks usually form a vacuum
C.moisture condenses in the tank, displacing the oxygen
D.most tank coatings give off poisonous vapors in the presence of moisture
A.until each quadrennial PSC inspection
B.until the end of each voyage
C.for a minimum of one year
D.for a minimum of two years
A.the most common method used in the United States
B.too expensive for common use
C.generally safe to sea life
D.generally harmful to sea life
最新試題
The main purpose of port State control is not to（）
（） is not installed on the main switchboar.
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
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
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
Using a file without a handle may result in （）
Diesel engine air start system check valves are opened by （）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.