A.側(cè)鉆B.泡油C.套銑
A.最上B.最下C.中間D.中偏下
A.定時(shí)定量間歇性反灌B.定時(shí)定量連續(xù)反灌C.定時(shí)不定量間歇性反灌D.定時(shí)不定量連續(xù)反灌