斜销的倾斜角a是决定斜抽芯机构工作实效的一个重要因素。
参考答案：对
The traveler lost his way in the woods, and made things worse was that it was getting dark.
A．that
B．what
C．which
D．as
治疗昏迷脱证亡阴的急救主方为
A．急性期应适当活动B．注意对中风先兆症状的观察及治疗C．注意功能锻炼D．节制饮食E．防止变证发生
