为什么严禁用硬物敲打机床淬火零件？
参考答案：严禁用硬物敲打机床淬火零件，会发生崩屑飞出伤人。
I told them I was perfectly ____ to help if they asked. [ ]
A. kind
B. interested
C. willing
D. favorable
能引起心源性休克的是（）.
A、烫伤
B、大出血
C、心肌梗塞
