下列描述錯誤的是（）
（單選題）下列說法正確的是
（單選題）有等式AB=0?，則下列結(jié)論中正確的是（）
設(shè)A為m×n矩陣，齊次線性方程組Ax=0有非零解的充分必要條件是
???????
（單選題）
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行列式的性質(zhì)
考察行列式的性質(zhì)，行列式互換兩行位置，行列式的值變號，兩次互換位置則行列式的值變?yōu)樵瓉淼闹?，和不為?/p>
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該科目易錯題
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