要约人,出价人
An offer terminate on the death of the offeror. 当发价人死亡，发价即被终止。
If the withdrawal reaches the offeror before or at the same time as the acceptance would have become effective. 公约规定，在接受送达发盘人之前，受盘人将撤回接受的通知送达发盘人，或两者同时送达，则接受可以撤回。
