自紧式锥形填料密封圈常用于()类压缩机。
参考答案:高压
So that even the students in the next classroom could hear his argument with somebody.
A.loudly he spoke
B.he spoke loudly
C.loudly did he speak
D.loudly spoke did he
肝内胆管出血
A.胃大部切除B.三腔两囊管压迫C.奥美拉唑静脉点滴D.肝叶切除术E.高选择性迷走神经切断