燃气轮机中参与热变功过程的能量形式有哪几项？
参考答案：
燃气轮机中参与热变功过程的能量形式有：热量、机械功、内能、焓、动能、推进功。
句型转换.
1. She does her homework at home. (改为否定句)
She her homework at home.
2. He's reading when it is raining. (就画线部分提问)
he when it is raining?
3. How's the weather in Beijing? (改为同义句)
the weather in Beijing?
4. I'm having a great summer in London. (改为一般疑问句并作否定回答)
you a great summer in London?
No, .
5. It's cloudy today. (就画线部分提问)
today?
下列不属于压缩机润滑油系统保养内容的是（）
A.清洗主电动机和风扇电动机
B.油冷却器定期清洗
C.润滑油定期更换
D.润滑油管道的定期清洗
