“国标”规定，必要时图纸可以加长的边应为(      )

A.短边                                                          

B.长边

C.上边                                                          

D.下边

详图符号应以粗实线绘制，圆的直径应为(      )

A.10mm                                                        

B.12mm

C.14mm                                                        

D.24mm

建筑构配件详图中构配件的外轮廓线应选择的线型是(      )

A.中实线                                                       

B.粗实线

C.细点划线                                                   

D.中点划线

“国标”规定，根据图样的用途与被绘对象的复杂程度，建筑总平面图常用的比例是(      )

A.1︰200                                                       

B.1︰300

C.1︰400                                                       

D.1︰500

断面的剖切符号应只用剖切位置线表示，其剖视方向由(      )

A.剖视方向线确定                                         

B.索引符号所在位置确定

C.编号所在的一侧确定                                  

D.剖切线的位置确定