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159. ÏÂÁйØÓÚSTP µÄ˵·¨ÕýÈ·µÄÊÇ______¡££¨Ñ¡ÔñÒ»Ïî»ò¶àÏ
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163. ÏÂÃæËµ·¨ÕýÈ·µÄÊÇ______¡££¨Ñ¡ÔñÒ»Ïî»ò¶àÏ
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B. ÔÚ STP¼æÈÝģʽÏ£¬É豸µÄ¸÷¸ö¶Ë¿Ú½«ÏòÍâ·¢ËÍ STP BPDU ±¨ÎÄ
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