1)at sight,见票即付，即期2)On Demand,见票即付，即期3)payable on demand,见票即付4)at sight,（见票）即付5)payable on demand,见票付款6)after sight,见票后7)after sight,见票后……8)at sight,见票即付9)months after sight,见票后……月10)on demand,见票即付
用法和例句
Either from the formal or from the substantial aspect,the generally called post-dated check does not conflict with the fact that a check must be payable on demand.