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				@@ -283,7 +283,7 @@ export default defineComponent({ 
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				                 ? resource.materialId 
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				                 : resource.bizId; 
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				             resource.url = 
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				-              resource.type === 'SONG' 
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				+              resource.coverImg || resource.type === 'SONG' 
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				                 ? 'https://oss.dayaedu.com/ktqy/1698420034679a22d3f7a.png' 
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				                 : resource.type === 'PPT' 
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				                 ? 'https://oss.dayaedu.com/ktqy/12/1701931810284.png' 
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