先解释画线的字词，再理解诗句的意思。   

1．相看两不厌，只有敬亭山。

厌：                                     

句意：                                                                                     

2．众鸟高飞尽，孤云独去闲。

闲：                                    

句意：                                                                                     

3．江南好，风景旧曾谙。

谙：                                   

句意：                                                                                     

企业成本报表的种类、项目、格式和编制方法由（）确定。