It is flammable cargo. Keep it away from the （）.A、gangwayB、bowC、boilerD、stern

A petroleum liquid has a flash point of 85°F. This is a grade ______.

A.B flammable liquid

B.C flammable liquid

C.D combustible liquid

D.E combustible liquid

How does an inert gas system on a tanker function to prevent explosions in cargo tanks?

A.De-energizes the "charged mist" effect

B.Maintains a positive pressure on the vent header to cool the flammable vapors

C.Inert gas filters out the flammable vapors from the cargo tank spaces

D.Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit

Any open flame can’t exist in this business building

A.Yes. We’ve removed all the flammable gas.

B.Yes. We’ve searched everywhere for flammable liquid

C.Yes. All the flammable liquid and gas have been removed already.

D.Yes. We’ve removed all the liquid, gas and wood which can be burned

Camphor oil is classified as a ______．

A.Grade A flammable liquid

B.Grade C flammable liquid

C.Grade D combustible liquid

D.Grade E combustible liquid

You are testing a tank that contained gasoline by using a combustible gas indicator．Under testing，the tank sample caused the needle to move rapidly to 100 on the dial then fall to zero．What is the concentration of flammable gas ________．

A.Less than the flammable range

B.Within the flammable range

C.Over the flammable range

D.The explosimeter is defective and giving a false reading

An inert gas system on a tanker should be used to ______.

A.prevent the generation of flammable or combustible gas in tanks

B.blow out cargo lines to prevent the build up of gas concentrations

C.dilute tank atmospheres to keep gas concentrations below the lower explosive limit

D.prevent fires in the pumproom by continually displacing flammable vapors

If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo ________．

A.Make periodic inspections of bilges

B.Keep the barge under constant surveillance

C.Have a properly certificated tankerman or at least one licensed officer on board the towing vessel

D.Verify ullage readings

A、acquire

B、respond

C、request

Butadiene，inhibited，is labeled as a ______．

A.Combustible liquid

B.Flammable gas

C.Flammable liquid

D.Flammable solid

On a ship，a door that is required to be marked KEEP CLOSED is designed to ______．

A.prevent the passage of flammable gases

B.prevent the passage of poisonous vapors

C.delay the spread of heat and flames

D.maintain watertight integrity