A <img src="https://www.beizhujiaoyu.com/uploads/202208/161258091079771.png" width="74" height="80" />  B <img src="https://www.beizhujiaoyu.com/uploads/202208/16125809157621.png" width="108" height="80" />  C <img src="https://www.beizhujiaoyu.com/uploads/202208/161258092153801.png" width="91" height="82" />  D <img src="https://www.beizhujiaoyu.com/uploads/202208/161258093015751.png" width="126" height="88" /> 

A <img src="https://www.beizhujiaoyu.com/uploads/202208/16125809502011.png" width="95" height="32" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/161258095829401.png" width="95" height="32" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/161258096589011.png" width="95" height="32" />

A 0 B 1 C 2 D 3

A 1 B 2 C 3 D 4

A A、B正惯性指数不同 B A与B相似 C A与B等价 D |A|=|B|