During thermal processing of food, many factors influence the heat resistance of microbial, include ,______ ,______ ,______ ，and______
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Factors that influence the heat transfer into or out of the product are ( ).
A. heat exchanger design
B. heat transfer properties of the product
C. density
D. method of heat transfer
（ ）has a place in food operation, for example in cooling tunnels for chocolate and confectionery.
A. radiation cooling
B. conduction cooling
C. convection cooling
D. evaporative cooling
Banana’s chilling injury during refrigerated storage is below （ ）.
A. 20℃
B. 12℃
C. 15℃
D. 18℃
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