When does the ignition system supply the electrical spark to cause ignition of the fuel/air mixture in the combustion chamber? ( )
A: In flight
B: At idle
C: All of above
D: At start
A: In flight
B: At idle
C: All of above
D: At start
举一反三
- The basic principle of the electrical spark ignition system has changed for over 75 years. （ ）
- Starting system and ignition system belong to the electrical system？
- The major components of_____ are battery , ignition switch and starter . A: ignition system B: starting system C: fuel system D: cooling system
- If the engine does start on air， but combustion does not immediately begin， the cause may not be （）.
- Starting system and ignition system belong to the electrical system？ A: 正确 B: 错误