“135”工作法较好地解决了营销人员“（）”的问题 ["A、干什么","B、怎么干","C、如何评","D、为什么干"]
分馏炉火嘴排列在炉膛中部，则炉管（） ["Ａ.单面受火加热","Ｂ.双面受火加热","Ｃ.周围受火加热"]
进气延迟角是指从（）到（）的曲柄转角． ["上止点/进气阀关","下止点/进气阀关","进气阀关/上止点","进气阀关/下止点"]
某四冲程柴油机排气提前角为48°，该机的膨胀冲程占曲柄转角是（） ["228°","138°","114°","132°"]
氨气最易引起燃烧的浓度为（） ["Ａ.11％","Ｂ.17％","Ｃ.27％"]
维管（束）植物
