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问题
单项选择题
可将甲型肝炎病毒灭活的最低温度条件是
A.56℃,30分钟
B.600℃,12小时
C.100℃,5分钟
D.100℃,10分钟
E.100℃,30分钟
答案
参考答案:C
选择题
—Could you tell me _______ the bikes this morning?
—He did it with the help of his father.
A. how did he fix up
B. how he fixes up
C. how he fixed up
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名词解释
瘙痒
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