单选题Which of the followings will affect the spray of fuel oil?（）A coke depositsB cylinder water temperatureC asphalt in fuel oilD lub oil

Which of the following represents the significance the fuel oil cetane number?

A.The cetane number has no affect on injection lag

B.The cetane number is an indication of the fuel's viscosity

C.Ignition lag is reduced with fuels having a high cetane number

D.The cetane number is of little significance in the combustion process

Which substance is NOT considered to be Oil under the pollution prevention regulations?

A.Petroleum and fuel oil

B.Sludge

C.Oil mixed with dredge spoil

D.Oil refuse and oil mixed with wastes

Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?

A.The viscosity of the fuel.

B.The quantity of water to be removed from the fuel.

C.The specific gravity of the fuel.

D.The quantity of dirt to be removed from the fuel.

A ship which is required to carry an Oil Record Book must log in the book ______.

A.discharge of ballast or cleaning water from fuel tanks

B.sounding levels of all fuel tanks on a daily basis

C.the grade and specific gravity of all fuel oil carried

D.fuel consumption rates on a weekly basis

The word "spray" (underlined in the third paragraph) means

A.oil mist

B.hot gas

C.injection

D.fuel oil