You are loading a cargo tank on your container ship. The tan

When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，check it ______.

A.one meter from the tank bottom and one meter below the tank top

B.one half the ullage of the tank and one meter below the tank top

C.one half the ullage of the tank and one meter above the tank bottom

D.at three meter intervals from the tank top to the bottom

You are carrying triethylamine，methyl methacrylate and isoprene in your multiple-product tanker. Which of the following statements is true?

A.Isoprene may be carried in a cargo tank adjacent to either of the other two cargoes

B.Methyl methacrylate may not be carried in a tank adjacent to a pump room

C.Methyl methacrylate must usually be heated to maintain its stability

D.Portable thermometers are not permitted to be used to take the cargo temperature of triethylamine

Preparations for loading cargo on board ship.

You are loading a cargo of bagged coffee beans．To keep cargo leakage from being contaminated by the ship's structure，you should ______．

A.use separation cloths between the deck and cargo

B.place the cargo on a layer of spaced dunnage

C.hose down the deck before loading the cargo

D.use bag-on-bag stowage

The wooden planking that protects the tank top from cargo loading is called ______．

A.Ceiling

B.Shores

C.Frames

D.Toms

To determine which grades of cargo a tank vessel is permitted to carry you should ______.

A.refer to the vessel's Certificate of Inspection

B.examine the cargo tanks and fittings

C.ask the terminal supervisor or his representative

D.check the loading order

While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank. You would then ______.

A.enter the tank safely

B.suspect the accuracy of the reading

C.ventilate the tank

D.test for nitrogen

What would NOT require that a detailed report of the release of hazardous cargo be made to the Department of Transportation?

A.The valve on an empty portable tank that contained acetone is accidently opened and some of the residue escapes to the open sea

B.A carboy of nitric acid is broken on deck while loading and is flushed overboard with no injury or damage

C.Part of your deck cargo of five gallon cans of paint is damaged and leaking so you jettison them to eliminate the fire hazard

D.Heavy weather causes damage to packages of a hazardous liquid that is subsequently pumped out at sea through the bilge pumping system.

Your tow includes a loaded chlorine barge．After inspecting the tow，the mate reports that he hears a hissing sound coming from the safety valves．Where will you find information on emergency procedures concerning the uncontrolled release of cargo ________．

A.Barge's Certificate of Inspection

B.Cargo Information Card on your towboat

C.Cargo Manifest or loading paper

D.Dangerous Cargo Regulations

When a non-volatile cargo is carried in a tank that has not been previously gas freed，then that tank shall ______．

A.be purged with hydrocarbon gas prior to loading

B.be gas-freed after loading operations

C.not be maintained in an inert condition

D.be maintained in an inert condition