單項選擇題

LFG tank and pipeline maintenance should include（）.

A.exclusion of all sand and solid matter
B.cleaning with clean fresh or sea water
C.examination for fractures and pitting
D.All of the above

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單項選擇題

It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.

A.that
B.which
C.who
D.these

單項選擇題

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

LFG tank and pipeline maintenance should include（）.

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It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.

If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）

It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.

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