A.10s B.0.25s C.20s D.40s
A.3 B.4 C.8 D.2
A.生石灰 B.勻礦 C.熱返礦
A.0.3~0.9m/s B.2.4~3.4m/s C.1.2~1.6m/s D.3.3~3.6m/s