Which one is the correct answer? A: No problem. B: It’smy pleasure. C: Are you John? D: Pleased to meet you.

Let me introduce myself, I’m John.Which one is the correct answer? A: No problem. B: It’smy pleasure. C: Are you John? D: Pleased to meet you.

298K时，下列热力学函数等于零的是（ ） A: Smy(O2,g) B: DfHmy(I2,g) C: DfGmy(白磷,s) D: DfGmy(金刚石,s)