《灵枢·根结》篇曰:“用针之要,在于知调()。”
参考答案:阴与阳
I was deep in thought, so I didn't notice _____.
A.him to come in
B.him come in
C.he come in
D.him coming in
导致工业性皮肤病最常见的机械性损伤是()
A.摩擦
B.色素沉着
C.胼胝
D.甲损伤