A cargo tank that is initially gas fre

1、While testing a cargo tank，your oxygen

While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank. You would then （）.Aenter the tank safelyBsuspect the accuracy of the readingCventilate the tankDtest for nitroge

2、A cargo that has a stowage factor over

A cargo that has a stowage factor over 40 is known as a（）.Ahygroscopic cargoBmeasurement cargoCstowage cargoDweight cargo

3、Cargo transfer operations on a tank ve

Cargo transfer operations on a tank vessel need NOT be stopped when（）.Aa tug comes alongside while the tanker is loading gradeBand E cargoes...

4、Access to a cargo pumproom on a tank v

Access to a cargo pumproom on a tank vessel carrying grades A，B，C or D liquid cargoes shall be（）.Aat least 13.1 feet away from the galley...

5、Regulations require that cargo tanks c

Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with（）.Agooseneck vents and flame screensBpressure-vacuum relief valvesCbranch vent lines and a vent headerDforced draft blower

6、Before entering a fuel tank that has b

Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an（）.AOrsat apparatusBflame safety lampCHalide torchDcombustible gas indicator