对于犬疥螨的实验室诊断，下面哪个正确（ ）。 A.
直接拔毛镜检 B.
刮取表面皮屑和被毛 C.
细胞学检查 D.
伍氏灯检查

单项选择题楷书平撇一般要求（ ）。

单项选择题Y pic is a growing organisation which has recently diversified into a number of significant new product markets. It has also recently acquired another company in one of its overseas markets. What would be the most appropriate form of organisation for Y pic?