Unverified90% confidenceDecision RuleTime unknown
断面判断新鲜度：新鲜山药折断处黏液拉丝长、断面雪白无斑点；断面发黄、有褐色锈斑或黑点说明存放过久或受冻，营养流失且易发苦
1
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90%
Confidence
Long-term
Relevance
-
First Seen
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Unverified鉴别真伪可用'砸碎测试'：正品驴皮胶质地坚脆、砸之易碎且断面平整光亮无异味；掺杂皮或劣质胶则韧性大、砸不碎或有腥臭刺鼻味69% similarUnverified折断腐竹时应呈脆断、断面有细密蜂窝状空心结构，说明是天然凉挂晾干；折不断或断面实心密实的多为烘干或添加剂过多，复水后口感发硬发黏69% similarUnverified领口罗纹是判断卫衣寿命的关键：优质罗纹回弹紧实，含少量氨纶不易松垮塌陷；领口松软无弹性的卫衣穿洗几次后领子会变大变形68% similarUnverified优质干红枣手捏应有弹性、回弹后不立即塌陷；果皮褶皱自然细密而非又干又硬的深沟，深沟往往说明晾晒过度或存放过久，口感发柴67% similarUnverified粘性与易撕性存在矛盾：强粘型冷冻不脱落但撕除费力残胶，可移除型好撕但冷冻久了边角易翘。冷冻长期存放优先选粘性，短期轮换选易撕67% similar
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