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问题 单项选择题

葡萄球菌肠毒素在何条件下被破坏

A．200～250℃，30min
B．100℃，15min
C．60℃，3～6min
D．56℃，20min
E．70℃，30min

答案

参考答案：A

选择题

This kind of cloth _______ well. I think it is worth _______.[ ]

A. washes; buying

B. is washed; buying

C. washes; to be bought

D. is washed; to be bought
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单项选择题

扩展标记语言的缩略语是（）

A.UART

B.MU

C.XML

D.SV
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