Thenominaldiameterofaboltisrepresentedby"d",andthediameteroftheholesonthetwopartssupposedtobejoinedisrepresentedby"d0",thenwhichoneiscorrect?螺栓的公称直径用d表示,两个薄的连接件上的通孔直径用d0表示,两个直径关系正确的是:
A. d=d0
B. d>d0
C. d
螺栓连接中,共有标准件()件。
A. 2
B. 3
C. 4
D. 5
In the stud joint, the screw end should be completely screwed into the threaded hole of thick parts.双头螺柱的连接中,旋入端要完全旋入厚零件的螺纹孔。
A. 对
B. 错
The taper angle at the bottom of the threaded hole should be 90 degrees when drawing. 螺纹孔底部的锥角,绘图时应该画成90度
A. 对
B. 错