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【单选题】
活塞环黏着在环槽中,取出时可采用______的方法使之松动,最后用专用工具取出。A.
木棒轻轻敲击；Ⅱ.铁锤轻轻敲击；Ⅲ.凿子切断环；Ⅳ.煤油浸泡和木棒敲击；Ⅴ.专用工具。
B.
Ⅰ＋Ⅱ＋Ⅴ
C.
Ⅰ＋Ⅳ＋Ⅴ
D.
Ⅱ＋Ⅴ
E.
Ⅰ＋Ⅳ
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