肺段切除术后病人应取
A．平卧位B．头低足高仰卧位C．健侧卧位D．1/4侧卧位E．患侧卧位
参考答案：C
With so much________my mind,I couldn't hear what they were quarreling over.[ ]
A. filling
B. filled
C. to fill
D. being filled
向心推力轴承和圆锥滚子轴承安装时应注意哪些事项？
