单选题
1分
When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted ...
When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the _____ .
参考答案: C
参考解析: 注: 用空气起动的四冲程柴油机起动时,起动空气进入处在做功冲程的气缸