脑桥出血的主要表现是（）
A.双眼球向病灶同侧同向凝视不能
B.双侧针尖样瞳孔
C.三偏症状
D.交叉瘫
E.陈-施氏呼吸
参考答案：A, B, D
男性，32岁。心慌、多汗2月余就诊。体检：甲状腺Ⅰ度肿大，未闻及血管杂音。心率1加次／分，律齐。三角肌及双下肢肌肉萎缩。血钾2．5mmo／L（）。
A.软瘫
B.房颤
C.阵发性高血压
D.粘液性水肿
E.突眼
F.满月脸
G.肌萎缩
H.低血压
An integral part of a blowout preventer that serves as the closing element on an open hole，and whose ends do not fit around the drill pipe but seal against each other and shut off the space below completely is the（）.
A.shear ram
B.blind ram
C.pipe ram
D.annular ram
