A.a’(x,y,0) B.a’(x,0,z) C.a’(0,y,0) D.a’(0,y,z)
A.a(x,y,0) B.a(x,0,z) C.a(0,y,0) D.a(0,y,z)
A.45° B.60° C.90° D.180°
A.同素性 B.从属性 C.定比性 D.平行性
A.图幅 B.图框 C.标题栏 D.会签栏