问题
单项选择题
The products described above have been subjected to （ ） treatment of at least 80ºC for 30 minutes.
A. freeze
B. cold
C. heat
D. wash
答案
参考答案：C
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The products described above have been subjected to （ ） treatment of at least 80ºC for 30 minutes.
A. freeze
B. cold
C. heat
D. wash
参考答案：C