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				@@ -135,7 +135,7 @@ export default { 
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				     handlePrint (type) { 
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				       const _this = this 
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				       _this.spinning = true 
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				-      allocateBillDetailPrint({ sn: this.$route.params.sn }).then(res => { 
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				+      allocateBillDetailPrint({ sn: this.$route.params.sn, isPreview: type == 'preview' ? 1 : 0 }).then(res => { 
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				         _this.spinning = false 
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				         if (res.type == 'application/json') { 
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				           var reader = new FileReader() 
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