题干
Can I help you? ____.
A：Thank you.
B：No, you can't.
C：Yes, please.
答案(点此获取答案解析）
C
Can I help you? ____.
A：Thank you.
B：No, you can't.
C：Yes, please.
的平行单色光照射双缝，在光屏上偏离中心的P点处恰好出现亮条纹，则( )