Which statement(s) is/are TRUE concerning crane cargo operations?A.Do not exceed rated load capacity of crane and container spreader or slingsB.During any cargo handling operation，the safety of personnel is paramountC.Cargo handlers must be outfitted with

When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to ______．

A.winch speed

B.boom strength

C.load radius

D.cable strength

Which of the following statement（s）is/are TRUE regarding a twin pedestal crane set ________．

A.The cranes may be operated independently

B.The cranes may be interconnected for twin operation

C.When twinned，the crane rotation on the foundation assembly is unlimited

D.All of the above

Which statement is TRUE concerning buoyant work vests aboard tankers ________．

A.They may be worn while working on deck but not while working over the side

B.They must be used only under supervision of a designated ship's officer

C.They will be accepted for up to 10% of the required life preservers

D.They may be worn during drills

Which statement is TRUE concerning deep well self-priming pumps ________．

A.When loading oil cargo，it is always loaded via the discharge line through to the pump until the tank is topped off

B.Stripping systems are generally eliminated for the purposes of cargo handling

C.In recent years deep well pumps have become increasingly unpopular in product tankers and medium size crude ships

D.There is no danger of damaging the pump from overheating

Which statement is TRUE concerning inert gas systems on tankers ________．

A.Flue gases from the ship's boilers are used in some systems

B.The gas is helium

C.Using the system accelerates the rusting of the tanks

D.All of the above

Which action（s）are included in crane operations ________．

A.Pre-operation of the anchor windlass

B.Preparing steam on deck

C.Luff，slew，and hoist operations

D.All of the above

Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane ________．

A.Taglines are wire rope purchases that raise and lower the jib

B.Taglines are wire ropes for horizontal positioning of the rider block

C.Taglines can be fastened to corners of vehicles or containers

D.The crane might not have taglines installed in its rigging system

Which statement is TRUE concerning cargo hose on tank barges ________．

A.Cargo hose must be able to withstand the shut-off head plus the static head of the cargo pump

B.Cargo hose must be able to withstand the static head of the cargo pump but no less than 100 psi

C.Cargo hose must be able to withstand the shut-off head less the static head of the cargo pump but no less than 100 psi

D.Cargo hose must be able to withstand at least 150 psi

You are on a tanker designed to carry molten sulfur．Which statement is TRUE ________．

A.There must be two portable toxic vapor detectors on board

B.The cargo tank ventilation system must maintain the H2S vapor concentration at 1.85% or more by volume

C.Cargo temperature may be taken by portable thermometers

D.The pressure in the heating coils in the tanks must be less than that of the cargo exerted on them

Which of the following statements is TRUE regarding crane operations ________．

A.Radio communications allow the crane operator to disregard the use of hand signals

B.The crane operators and signalman must be familiar with the correct hand signals

C.The forward cranes can be operated from the bridge

D.The aft cranes can be operated from the aft steering station