合并单元有哪几种运行状态？分别如何定义？
["\u7b54\uff1a\u5408\u5e76\u5355\u5143\u8fd0\u884c\u72b6\u6001\u5206\u201c\u8df3\u95f8\u201d\u3001\u201c\u505c\u7528\u201d\u4e24\u79cd\uff0c\u5b9a\u4e49\u5982\u4e0b\uff1a\n\uff081\uff09\u8df3\u95f8\uff1a\u88c5\u7f6e\u7535\u6e90\u6295\u5165\uff0c\u68c0\u4fee\u538b\u677f\u53d6\u4e0b\uff1b\n\uff082\uff09\u505c\u7528\uff1a\u68c0\u4fee\u538b\u677f\u653e\u4e0a\uff0c\u88c5\u7f6e\u7535\u6e90\u5173\u95ed\u3002"]