第10章 二元一次方程
组综合测试卷
(A)一、选择题。
(每题3分，共21分)1．下列方程组①
<Object: word/embeddings/oleObject1.bin>
②<Object: word/embeddings/oleObject2.bin>
③<Object: word/embeddings/oleObject3.bin>
④<Object: word/embeddings/oleObject4.bin>
⑤<Object: word/embeddings/oleObject5.bin>
其中是二元一次方程组的有
( )
A．2个B．3个C．4个D．5个2．设<Object: word/embeddings/oleObject6.bin>
当<Object: word/embeddings/oleObject7.bin>
时，<Object: word/embeddings/oleObject8.bin>
；当<Object: word/embeddings/oleObject9.bin>
时，<Object: word/embeddings/oleObject1 ...