事件树分析方法属于（）。
A.概率法
B.评分法
C.检查表法
D.综合法
参考答案：A
As he ______ to his work that he didn't notice that it was already past midnight. [ ]
A. was so busy
B. so devoted
C. was so devoted
D. was so turned
脊麻平面指
A．感觉-运动复合平面
B．本体神经阻滞平面
C．交感神经阻滞平面
D．感觉神经阻滞平面
E．运动神经阻滞平面
