(µ¥Ñ¡Ìâ)5: Åж¨Ò»¸ö¶ÓÁÐQ(×î¶àÔªËØΪm0)ΪÂú¶ÓÁеÄÌõ¼þÊÇ()
A: rear-front= = m0
B: rear-front-1= =m0
C: front= =rear
D: front= =rear+1
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