问题
单项选择题
粮粒中存在有很多（），这些基团对水蒸气分子具有较强的吸附能力。
A、亲水性基团
B、疏水性基团
C、非极性基团
D、共价基团
答案
参考答案：A
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粮粒中存在有很多（），这些基团对水蒸气分子具有较强的吸附能力。
A、亲水性基团
B、疏水性基团
C、非极性基团
D、共价基团
参考答案：A
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