A、<span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt">n<span style="mso-spacerun: yes"></span></span>
B、<span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt">n
<chmetcnv tcsc="0" numbertype="1" negative="True" hasspace="True" sourcevalue="1" unitname="C" w:st="on" />-1<span style="mso-spacerun: yes"></span></span>
C、<span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt">n+1<span style="mso-spacerun: yes"></span></span>
D、<span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt">n-2</span>
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