颅内巨大动脉瘤的诊断标准是（）。
A.动脉瘤>1cm
B.动脉瘤>1.5cm
C.动脉瘤>2cm
D.动脉瘤>2.5cm
E.动脉瘤>3cm
参考答案：D
Whenever you a present, you should think about it from the receiver’s point of view.
A． bought
B．have bought
C．will buy
D．buy
P波消失，代之以匀齐的"F"波（）
A.心室颤动
B.心室扑动
C.心房扑动
D.心房颤动
E.尖端扭转型室速
