柴油发电机组一般包括几部分
参考答案：
柴油发动机、交流发电机、散热水箱或热交换器、公共底座、控制系统、电力输出开关、燃油箱、消音器。
The teacher said that my composition was good ___ some spelling mistakes.
A．except
B．but
C．except for
D．besides
