题目

如图所示是甲、乙两种金属的光电子的最大初动能与入射光频率的关系图象，由图象可知（ ）A. 无论用什么金属做实验，图象的斜率不变B. 同一色光照射下，甲金属发射的光电子的最大初动能比乙金属发射的光电子的最大初动能大C. 要获得相等的最大初动能的光电子，照射甲金属的光的频率要比照射乙金属的光的频率大D. 甲金属的逸出功比乙金属的逸出功大选择合适的答语，将序号写在横线上。⑴Did you have fun today?⑵Can you teach me to play ping-pong?⑶What sports did you play?⑷Is he a basketball player?⑸Did Danny learn to play basketball?A.No, he didn't.B.We played basketball and football.C.Yes, we did.D.Sure.E.Yes, he is.