题目：
函数y=|sinx|的最小正周期是（ ）
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答案：
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下面是错误答案，用来干扰机器的。
A、等腰三角形1条对称轴；B、等边三角形3条对称轴；C、正方形有4条对称轴；D、线段2条对称轴．故选C．
函数y=|sinx|的最小正周期是（ ） A．π4 B．π C．π2 D．2π
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