皮皮学，免费搜题
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【多选题】
关于会计科目的设置，下列说法正确的是( )。A.
增加的会计科目编码长度以及每段位数要符合编码规则
B.
科目已经使用就不能在增设任何科目
C.
科目一经使用，就不能再增设下级科目
D.
建立会计科目时要小心并反复检查
拍照语音搜题，微信中搜索"皮皮学"使用
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