发动机上检测爆震的是什么,那么爆震是一种怎样的现象?
参考答案:
爆震传感器,是指燃烧室内末端混合气在火焰前锋面尚未到达之前产生的自燃现象。
眼底视盘边缘模糊称为视盘水肿。
Faced with all the difficulties, the girl ____ her mother for comfort.
A.turned over
B.turned from
C.turned to
D.turned up