单选题
1分
A diesel engine is turned at normal cranking speed and no ignition occurs. This could be the result ...
A diesel engine is turned at normal cranking speed and no ignition occurs. This could be the result of ____.
参考答案: C
参考解析: 注: 柴油机以正常曲柄速度转动,不发火,可能是燃油系统中有气泡。