换挡时离合器还未接合时，就猛踩加速踏板，发动机空转，会节约燃料。
参考答案：错
This is a very interesting book. I'll buy it, _____. [ ]
A. how much may it cost
B. no matter how it may cost
C. however much it may cost
D. how may it cost
选煤厂工艺设备岗位加压过滤机作业，加压过滤机的启动过程是什么？
