LLO
参考答案：
衬底激光剥离，是利用激光能量分解氮化镓（GaN）/蓝宝石接口处的GaN缓冲层，从而实现LED外延片从蓝宝石衬底分离。
- The girl __all her pocket money to the people in the Southwest for the serious drought(旱灾). - What a good girl!
A. took away B. gave up C. gave away
了望人员和舵工的职责是（）
A.分开的
B.不分开
C.可以分开，也可以不分开
D.以上都不是
