单伸缩立柱的一般拆卸方法为（）。
A.将待拆卸的立柱放在立柱拆装台上
B.将待拆卸的立柱夹持在立柱拆装台位上
C.．根据导向套的固定结构，拆开导向套固定零件
D.用起重设备悬吊活柱，若活柱较紧而悬吊不出时，可从立柱活塞腔送人乳化{葭或压缩空气，逐渐加压，直至话柱被吊出
E.对于双伸缩立柱，应根据不同结构分别拆出上活柱与下括柱
参考答案：B, C, D, E
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