柴油机燃烧过程中，气缸内温度最高点是在（）。
A.滞燃期
B.速燃期
C.缓燃期
D.后燃期
参考答案：C
Students who graduate with working experience will be given more ____ than those who never work in any company．
A prediction B, presence C.preparation D．preference
220kV母线有几组PT？
