数字式电液控制系统是纯电调的控制系统。
参考答案：对
The man insisted ____ a taxi for me even though I told him I lived nearby. [ ]
A. find
B. to find
C. on finding
D. In finding
抹灰工程中中层所起的作用是（）
A、找平
B、粘结
C、装饰
