前馈控制系统一般可单独使用,因为其控制精度高,且不受外界干扰影响。
参考答案:错
构成物质的微粒有______、______、______三种,例如:水银是由______构成,食盐是由______构成的.(要求填出具体粒子的名称)
句型转换。
1. The news that he got full marks surprised the little boy.(同义句转换)
The little boy________ ________ ________ the news that he got full marks.
2. Jim has never been to the Great Wall.(变为反意疑问句)
Jim has never been to the Great Wall, ________ ________?
3. My father is the doctor. My father saved the dying boy.(连成一句)
My father is the doctor________ ________ the dying boy.
4. After she spoke I knew she was a Japanese.(同义句转换)
I________ ________ she was a Japanese________ she spoke.
5. Suzhou lies in the north of Jiangsu Province.(对画线部分提问)
________ ________ Suzhou________ ?