其处理原则是
A．胶布固定B．压力包扎固定C．内固定D．牵引固定E．胸腔闭式引流术
参考答案：A
—Who is ___ English teacher?
—Well, it's Mrs. Green. She teaches ____ English very well.
A．you; we
B．you; ours
C．your; us
D．your; our
键码的定义：在实体集的范围内唯一标识______。
