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
正确答案是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
正确答案是A