Harry: I hear you are going to get married soon.
Ron: That’s right, next June. June 21st. Can you come to the wedding?
Harry: Oh! ________ That’s when we’re away on vacation.
Ron: Never mind, we’ll send you some wedding cake.
Harry: I hear you are going to get married soon.
Ron: That’s right, next June. June 21st. Can you come to the wedding?
Harry: Oh! ________ That’s when we’re away on vacation.
Ron: Never mind, we’ll send you some wedding cake.
Harry: I hear you are going to get married soon.
Ron: That’s right, next June. June 21st. Can you come to the wedding?
Harry: Oh! ________ That’s when we’re away on vacation.
Ron: Never mind, we’ll send you some wedding cake.
RON
测定辛烷值时,为什么有的燃料的辛烷值会大于100?为什么有的燃料的RON>MON,而有的燃料却是RON