【单选题】By duality we mean that language has two sets of structures, one of________ and the other of .
A.
surface structure, deep structure
【单选题】By duality we mean that language has two sets of structures, one of _______ and the other of ______.
A.
surface structure, deep structure
【简答题】在索书号“I247.5/D95 ”中,( )是本书的种次号。
【单选题】如图所示英制游标卡尺的读数是( )inch。【图片】
【单选题】土石坝为散粒体结构,抗冲能力很低。应在土石坝上、下游坝坡设置( ),以免风浪、雨水及气温变化带来有害影响.