A. 提高压缩比 B. 提高进气温度 C. 增加进排气门数 D. 适当增加进气门升程 E. 选择合适的配气相位
A. navigating with a low diesel engine speed B. navigating with a stable diesel engine speed C. increasing the efficiency of propeller D. increasing fuel injectio
A. 20km/h B. 40km/h C. 60km/h
A. 导体 B. 半导体 C. 绝缘体