Injection lag in a diesel engine may be caused by（）
- Aa higher cetane number of fuel oil
- Bthe diesel fuel used having a high viscosity
- Cmechanical rigidity in the lube pump mechanism
- Da decrease rigidity in the fuel pump delivery pressure
问题
Injection lag in a diesel engine may b
参考解析：
分类：船舶电气与船舶安全题库
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