The purpose of the pneumatic system is to supply ______ (压缩空气)for a controlled temperature and pressure enviroment.
A.compressed air; B.air; C.cool air; D.oxygen;正确答案A
The purpose of the pneumatic system is to supply ______ (压缩空气)for a controlled temperature and pressure enviroment.
A.compressed air; B.air; C.cool air; D.oxygen;正确答案A