Answer Fold.Everyone checking the turn made it look like your middle pair of queens might be good, so you bet the river.But the early limper's actions are suspect.

答案是封牌，每个人在turn是看注，使你第二大对子QQ看起来像好牌，因此你在river时下注。

In this paper a conception of supply subchain is introduced and based on the analyses of the characteristic of the supply subchain , one simple model is support.

提出供应子概念,对子进行了分析,阐述了以子为单位进行考察评价重要性,并提出了一种简单评价模型。