A.50 B.80 C.100 D.120
A.20% B.15% C.10% D.5%
A.在85±2℃受热5h B.在85±2℃受热3h C.在70℃下受热5h D.在70℃下受热3h
A.250 B.150 C.100 D.300
A.20cm B.15cm C.10cm D.7cm
