设<img src="/lqwvjeImg/9d/9de4ab2618298def0e5eb08af959e07f.png" style="width:13px;height:19px;">与<img src="/lqwvjeImg/2d/2dec17f40955e8faa25cfbb1f5ffbb46.png" style="width:15px;height:23px;">为非零向量,则<img src="/lqwvjeImg/65/65bd3259ffc1f223f98d9ea4a27aaace.png" style="width:55px;height:23px;">是( ).<br>·<img src="/lqwvjeImg/2a/2a15eb1b3396b2897d37bdd5772df38e.png" 的充要条件<br>·<img src="/lqwvjeImg/37/3767fa953633b2defea1f23c8a744bd2.png" 的充要条件<br>·<img src="/lqwvjeImg/2f/2f97d747bf113a90501e12e9335aece1.png" 的充要条件<br>·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16977712611540d398a597fec4f888a78ee002db9e051image89.png" 的必要但不充分条件

设

与

为非零向量,则

是( ).
·

·<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16977712611540d398a597fec4f888a78ee002db9e051image89.png" 的必要但不充分条件

出自：河南工业大学钢筋混泥土结构

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