设<img src="https://static.zxtiku.com/wangke/imgs/topic/e500f121bb5a698199c939b9ce2fcde0.jpg"/>, <img src="https://static.zxtiku.com/wangke/imgs/topic/03000291e1dcf3c8274472017f8351d3.jpg"/>为集合<img src="https://static.zxtiku.com/wangke/imgs/topic/28db76b067058093198a64935f99193d.jpg"/>上的等价关系，则<img src="https://static.zxtiku.com/wangke/imgs/topic/f4b30fdace64909008db7bd04ec9fea5.jpg"/>也是集合<img src="https://static.zxtiku.com/wangke/imgs/topic/6f19c22c6580606fe141e6cd3271045b.jpg"/>上的等价关系.<br/> A. 对 B. 错