布鲁斯·帕廷顿计划揭示了复杂的阴谋，推动了侦探思维的深度与严密。梯形内螺纹公差尺寸表

　　Holmes' brother Mycroft joins him to investigate the murder of Arthur Cadogan West, a clerk in a government defence office found dead by railway lines with pages from a secret submarine plan in his pocket. Holmes believes that the victim was killed somewhere other than the railway track. Discovering a suspect whose house backed on to the line and could have dropped the body ont... (展开全部)