The valve on the discharge side of a cargo pump on a tank ve

In Cargo Survey，T．C．V．refers to ______．

A.total calculated volume

B.terminal cargo volume

C.tank cargo valve

D.tolerance of cargo valve

Before discharge of cargo tank ballast is undertaken，______．

A.the deck isolating valve is open

B.flue gas isolating valve

C.blower suction valve

D.blower discharge valve

To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the_______ .

A.suction service valve as a vapor

B.suction service valve as a liquid

C.discharge service valve as a vapor

D.charging valve as a liquid

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

The fitting at the end of a cargo line in a tank that allows suction to be taken close to the bottom of a tank is a ______．

A.Suction end

B.Strainer

C.Bell-mouth

D.Vacuum valve

Which method should be used to warm up the pump turbines prior to discharge ________．

A.Lock the turbine rotor and slowly bleed in steam until operating temperature is reached

B.Run the pump at high speed with the discharge valves closed

C.Run the turbine at slow speed with the pump disconnected

D.Shut the discharge valve and run the pump at slow speed

Cargo pump relief valves are piped to the ______．

A.cargo pump pressure gauges

B.crossover lines interconnecting two pumps

C.suction side of pumps

D.atmosphere through pump vents

The valve on the discharge side of a cargo pump on a tank vessel will usually be a ______.

A.butterfly valve

B.spectacle valve

C.check valve

D.globe valve

What is the purpose of the relief valve of a cargo pump ________．

A.Provides for the removal of vapors

B.Allows two or more tanks to be filled at the same time

C.Provides for the emergency shutdown of the pump

D.Permits the return of cargo to the suction side of the pump

You start a centrifugal cargo pump to discharge cargo．The pump works for a while and then loses suction．This could be caused by ______．

A.The pump running backwards

B.Incomplete priming

C.The discharge head being too high

D.All of the above