开始发生再结晶的标志是（）
A.产生多变化
B.新的无畸变等轴小晶粒代替变形组织
C.晶粒尺寸显著增大
参考答案：B
口腔颌面部损伤时常见的窒息原因有（）
A.组织移位
B.组织肿胀
C.舌后坠
D.血凝块和分泌物堵塞气道
E.气管被压闭
Which of the following statements about intangible assets is least likely correct（）
A. Generally, internally produced intangible assets are not reported on the balance sheet. B. In most countries, research and development costs are capitalized.
C. Intangible assets are reflected at their purchase prices when acquired from an outside entity.
