97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

單項選擇題

The tool used in precision work to smooth or enlarge a slightly undersized hole, is called()

A.round out
B.round file
C.reamer
D.hole driller

微信掃碼免費搜題