单选题The system of valves and cargo lines in the bottom piping network of a tank vessel that connects one section of cargo tanks to another section is called a（）.A crossoverB runaroundC come-alongD manifold

The piping that routes an oil cargo from the manifold to underdeck pipelines is known as a ______.

A.cargo fill

B.line drop

C.transfer

D.branch line

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

A segregated ballast system is a system where

A.all ballast is processed through the oily water separator

B.ballast is taken on and discharged through a separate main deck

C.ballast and cargo tanks are separated by cofferdams

D.all ballast lines, tanks, and pumps are independent of those used for oil

What is the purpose of pressure-vacuum relief valves ________．

A.Regulation of discharge pressure from cargo pumps

B.Maintaining constant velocity in cargo lines

C.Regulation of suction head on cargo pumps

D.To maintain a tank or void at atmospheric pressure

What is NOT a requirement of cargo piping installed in tank vessels carrying grade D or E cargo ONLY ________．

A.The cargo piping system shall be fixed

B.Flanged joints shall be used for pipe sizes exceeding 2 inches in diameter

C.Piping through bunker spaces may be run through a pipe tunnel

D.Connections at bulkheads must be made so that the plating does not form part of a flanged joint

What is an example of the term "Restraint of Rulers，Princes，or Peoples" in a marine insurance policy?

A.A prohibition from loading a cargo from a country when the cargo may be a carrier of infectious diseases

B.Arrest of a vessel by legal authorities to satisfy claims through exercise of a maritime lien

C.Damage caused by riot of the population of a port

D.Losses caused by fines from polluting the harbor after malfunction of a piping system

The system of valves and cargo lines in the bottom piping network of a tanker that connects one section of cargo tanks to another section is called a ______．

A.come-along

B.crossover

C.manifold

D.runaround

An inert gas system on a tanker should be used to ______.

A.prevent the generation of flammable or combustible gas in tanks

B.blow out cargo lines to prevent the build up of gas concentrations

C.dilute tank atmospheres to keep gas concentrations below the lower explosive limit

D.prevent fires in the pumproom by continually displacing flammable vapors

Valves on steam-smothering lines to cargo tanks shall be set with ______．

A.The master control valve shut and valves to individual cargo tanks shut

B.The master control valve open and valves to individual cargo tanks shut

C.The master control valve shut and valves to individual cargo tanks open

D.All valves open

In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system, there must be ______.

A.fuel

B.oxygen

C.ignition

D.All of the above