四冲程发动机曲轴与凸轮轴传动比为()。
A.1:1
B.1:2
C.2:1
参考答案:C
______ the program, they have to stay there for another two weeks.[ ]
A. Not completing
B. Not completed
C. Not having completed
D. Having not completed
Ils aimeraient bien ____________ un collaborateur plus expérimenté.
A.chercher
B.trouver
C.lire
D.se débarrasser