已知,,
(1)求tan2α的值:
(2)求β。
参考答案:
创面处理方法与热烧伤相同()
A.强碱烧伤(不包括生石灰)
B.电弧烧伤
C.电接触伤
D.生石灰烧伤
E.硫酸烧伤
Living in the dormitory means_________ to take care of yourself, understand each others’ differences and share________ interests.
A.to learn; common
B.learning; ordinary
C.to learn; ordinary
D.learning; common