Many girls go to your house. They bring all their pet dogs. In all, there are 22 heads and 72 feet. How many

girls and dogs are there in the room?[ ]

A. 6 girls and 16 dogs

B. 7 girls and 15 dogs

C. 8 girls and 14 dogs

D. 9 girls and 13 dogs

关于低温保藏食品的描述错误的是（）

A.降低或停止微生物增殖速度

B.杀死细菌

C.降低食品酶活力

D.降低食品化学反应

E.对食品质量影响较少