—________ was his vacation?
—It was not very good. [ ]
A. Where
B. What
C. How
D. When
答案:C
为保证滑销系统的正常工作,大修中应对所有滑销进行解体检查。
自动变速器在前进档打滑时可能是由于手动拉杆或节气门拉杆失调造成的。()