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