填空题
阵列粘贴；极坐标
A.埋孔B.盲孔C.过孔D.埋孔、盲孔和过孔三类
A.信号层和内电层B.机械层和丝印层C.助焊层和阻焊层D.禁止布线层和钻孔层
A.Design Rule Check（DRC）B.Print SetupC.Electrical Rule Check（ERC）D.Elliptic
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