A.100℃ B.340℃ C.400℃ D.280℃
A.0.7-1.3% B.0.6-0.8% C.0.25-0.6% D.2.5-4%
A.10MP(A)≤p<100Mp(A) B.8MP(A)≤p<50Mp(A) C.60MP(A)≤p<100Mp(A) D.8MP(A)≤p<100Mp(A)