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问题 单项选择题

细菌菌相是由共存于食品中细菌的什么和相对数量构成？（）

A.分布

B.结构特征

C.种类

D.大小

E.形状

答案

参考答案：C

选择题

水的电离平衡曲线如图所示，下列说法不正确的是：

A．图中四点Kw间的关系： A＝D＜C＜B

B．若从A点到D点，可采用：温度不变在水中加入少量酸

C．若从A点到C点，可采用：温度不变在水中加入少量NH4Cl固体

D．若处在B点，将pH＝2的硫酸与pH＝10的KOH的两种溶液等体积混合后，溶液显中性
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单项选择题

Questions 24-30


·Look at the questions for this part.
·You will hear a passage about job. You will listen to it twice.
·For questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response.
·Mark one letter A, B, or C on the Answer Sheet.

It is implied in the passage that ______.

A. the Maces believe a good career is even more important than their family life
B. Rodney’s children are quire happy with their position in the family
C. even capable women sometimes need encouragement from their families
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