椎管内麻醉阻滞平面过宽时,血压下降、心率减慢时常用处理方法有()。
A、静脉注射麻黄素
B、肌注阿托品
C、快速输液
D、上氧
E、暂停手术
参考答案:A, C, D, E
After ______ seemed hours of waiting in line, finally it was our turn to pass the gateway.
A.that
B.it
C.what
D.which
运用普通股每股收益无差别点确定最佳资本结构时,须计算的指标是()
A.息税前利润
B.营业利润
C.净利润
D.利润总额