金属在火灾中的变化特征有哪些？
["\u7b54\uff1a\uff081\uff09\u7269\u6001\u53d8\u5316\uff1a\u91d1\u5c5e\u5728\u9ad8\u6e29\u4e2d\u53ef\u51fa\u73b0\u8f6f\u5316\u3001\u6eb6\u5316\uff1b\n\uff082\uff09\u8868\u9762\u6c27\u5316\uff1a\u91d1\u5c5e\u5728\u706b\u707e\u4e2d\u7531\u4e8e\u4e0d\u540c\u7684\u706b\u573a\u6e29\u5ea6\u800c\u4ea7\u751f\u4e0d\u540c\u7a0b\u5ea6\u7684\u6c27\u5316\u53cd\u5e94\uff0c\u5176\u6c27\u5316\u5c42\u7684\u8272\u6cfd\u53cd\u5e94\u4e86\u706b\u707e\u4e2d\u7684\u6e29\u5ea6\uff1b\n\uff083\uff09\u5f39\u6027\u53d8\u5316\uff1a\u91d1\u5c5e\u5728\u9ad8\u6e29\u4e2d\u4f1a\u5931\u53bb\u539f\u6709\u7684\u5f39\u6027\uff1b\n\uff084\uff09\u5f3a\u5ea6\u53d8\u5316\uff1a\u91d1\u5c5e\u5728\u4e0d\u540c\u6e29\u5ea6\u4f5c\u7528\u4e0b\u5176\u5f3a\u5ea6\u53d8\u5316\u4e0d\u540c\uff0c\u94a2\u6750\u5728500\u6444\u6c0f\u5ea6\u65f6\u5f3a\u5ea6\u53ea\u6709\u539f\u6765\u7684\u4e00\u534a\uff1b\n\uff085\uff09\u91d1\u76f8\u7ec4\u7ec7\u53d8\u5316\uff1a\u91d1\u5c5e\u5728\u4e0d\u540c\u7684\u52a0\u70ed\u6e29\u5ea6\u3001\u4fdd\u6e29\u65f6\u95f4\u3001\u51b7\u5374\u901f\u5ea6\u4e0b\u5f62\u6210\u4e0d\u540c\u7684\u91d1\u76f8\u7ec4\u7ec7\u3002"]