In a diesel engine, the time taken to heat the fuel particles, turn them into vapor, and bring about combustion is called （）

A.a spark plug
B.injectors
C.the heat of compression
D.increasing jacket water temperatures

A.one automatic drain serving both containers
B.two air starting containers of approximately equal size
C.one control air container and one starting air container
D.one additional means of starting the main engine

A.prevent heat corrosion to internal components
B.increase fuel delivery rate and economy
C.prevent pre-ignition
D.avoid carbonization of the nozzle tips