A. 对 B. 错
A. P1 =P2,V1=2V2,T1= (1/2)T2 B. P1 =P2,V1=(1/2)V2,T1=2T2 C. P1 =2P2,V1=2V2,T1=2T2 D. P1 =2P2,V1=V2,T1=2T2