The valve has a manual override lever that also functions as a mechanical position indicator.In the above sentence , "functions as" means
A.调节
B.起...的作用
C.滑动
D.与..相对应
正确答案是B
The valve has a manual override lever that also functions as a mechanical position indicator.In the above sentence , "functions as" means
A.调节
B.起...的作用
C.滑动
D.与..相对应
正确答案是B