以下哪种酶缺陷是异染性脑内质营养不良髓鞘形成不良的主要原因

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28509' and id < 2327889 and id<>'2327889' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28509' and id > 2327889 and id<>'2327889' order by id asc limit 5