A.168.6 B.1686 C.132.6 D.1326
A.20~30% B.10~30% C.20~40% D.30~40%
A.煤 B.石油 C.天然气 D.甲烷
A.加压-常压 B.加压-加压 C.加压-减压 D.常压-减压