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Emma助教
2024-08-01 15:21
該回答已被題主采納
同學,你好,參見沖刺筆記下冊P108 ,截圖發(fā)給你了哦,總結如下:Bonds rated Baa3/BBB- or higher are called “investment grade”. (評級為 Baa3/BBB 或更高的債券被稱為“投資級”)
??荚図樌ㄟ^,fighting~
