A. 正确 B. 错误
A. 失去蓝系统时 B. 绿和黄系统压差大于500PSI时 C. 只要探测到绿和黄系统之间有压差 D. 两台发动机都起动好后
A. 1999.10.1 B. 2004.7.30 C. 2001.9.1 D. 2002.11.18
A. increase discharge pressure B. increase suction vacuum C. develop pulsation flow D. keep a steady rate of flow