除两刃式端铣刀外,一般端铣刀端面中心无切削作用。()
参考答案:对
The old man sat in front of the television every evening, happy _____ anything that happened to be on.
A.to watch
B.watching
C.watched
D.to have watched
第13届亚运会于哪年哪月在哪个地方举行,历时多少天?