某工程施工中不慎塌方，引起工伤事故，对严重损伤病人的处理首先是 ( )
A．抗休克B．骨折固定C．治疗窒息D．镇静止痛E．止血
参考答案：C
He made his final __________ last winter and__________ from then on.
A．appear; disappeared
B．appearance; disappeared
C．disappearance; appeared
D．appearance; appeared
柱塞式喷油泵由凸轮轴、滚轮、推杆、（）、齿杆组和出油阀构成。
