【单选题】空间三个坐标轴在轴测投影面上轴向伸缩系数一样的投影,称为
【判断题】斜轴测投影分为斜等轴测投影和斜二等轴测投影。()
【简答题】If indeed silence is golden, it is also becoming as rare as gold. It seems that the progresses of man includes a rising volume of noise. 【M1】______ In every home a stereo or television will fill the r...
【判断题】正轴测投影坐标轴OX,OY,OZ,都与轴测投影面相倾斜,二投影线与轴测投影面相垂直.
【判断题】正轴测投影分三种:正等轴测投影、正二等轴测投影和正三等轴测投影。()
【单选题】Mobile phones are also becoming a common ___ on campus.
【单选题】根据投射线和轴测投影面相对位置的不同,轴测投影可分( )。