1. 选CA. 01110000(B)=2^6+2^5+2^4=96B. 249(D)=249C. 125(Q)=8^2+2*8+5=85D. AA(H)=10*16+10=1702. 选BA. 3F(H)=3*16+15=63B. 64(D)=64C. 77(Q)=7*8+7=63D. 111110(B)=2^6-2=62