A.絕熱 B.絕冷 C.保熱 D.保溫
A.-157℃~-163℃ B.-160℃~-166℃ C.-154℃~-160℃ D.-151℃~-157℃
A.0.5%~4.1% B.1%~12% C.5%~15% D.10%~20%