用频率为<img src="https://static.zxtiku.com/wangke/imgs/topic/184dc01ab995bd7f26fc0dc9ddf1e532.jpg"/>的单色光照射某一种金属时,测得光电子的最大动能为<img src="https://static.zxtiku.com/wangke/imgs/topic/6d2009b3f8bc6269c227b1fe8b916dbb.jpg"/>;用频率为<img src="https://static.zxtiku.com/wangke/imgs/topic/e7655f06eb23a790cffb5650b339ccdd.jpg"/>的单色光照射另一种金属时,测得光电子的最大动能为<img src="https://static.zxtiku.com/wangke/imgs/topic/696e94e6763e08b268444b542dcf1871.jpg"/>。如果<img src="https://static.zxtiku.com/wangke/imgs/topic/20121075288dc6c2ae30d40e6373030e.jpg"/>,那么[ ] A. <br/> <img src="https://static.zxtiku.com/wangke/imgs/topic/184dc01ab995bd7f26fc0dc9ddf1e532.jpg"/>一定大于<img src="https://static.pphuashu.com/wangke/imgs/topic/e7655f06eb23a790cffb5650b339ccdd.jpg.png"/> B. <br/> <img src="https://static.zxtiku.com/wangke/imgs/topic/184dc01ab995bd7f26fc0dc9ddf1e532.jpg"/>一定小于<img src="https://static.zxtiku.com/wangke/imgs/topic/e7655f06eb23a790cffb5650b339ccdd.jpg"/> C. <br/> <img src="https://static.zxtiku.com/wangke/imgs/topic/184dc01ab995bd7f26fc0dc9ddf1e532.jpg"/>一定等于<img src="https://static.zxtiku.com/wangke/imgs/topic/e7655f06eb23a790cffb5650b339ccdd.jpg"/> D. <br/> <img src="https://static.zxtiku.com/wangke/imgs/topic/184dc01ab995bd7f26fc0dc9ddf1e532.jpg"/>可能大于也可能小于<img src="https://static.zxtiku.com/wangke/imgs/topic/e7655f06eb23a790cffb5650b339ccdd.jpg"/>