A.C%=0.02% B.C%=1.3% C.C%=0.15% D.C%=0.35%
A.50℃ B.630℃ C.1150℃ D.770℃
A.C%=2.11% B.C%=1.3% C.C%=4.3% D.C%=0.0218%