口腔.颅面大手术后常需留置气管插管24小时。留管期间病人不得激动,否则可引起() ["喉水肿","粘膜缝线撕开","护板.填充物或固定移位.脱落和破裂等","诱发恶心呕吐,导致伤口敷料污染","口内出血"]
在上行DPCCH的开环功率控制中,UE根据收到的IE“DPCCH_Power_offset”和测量得的CPICH_RSCP的值计算出上行DPCCH的初始功率,其计算公式为() ["DPCCH_Initial_power=DPCCH_Power_offset+CPICH_RSCP","DPCCH_Initial_power=DPCCH_Power_offset-CPICH_RSCP","DPCCH_Initial_power=DPCCH_Power_offset+CPICH_RSCP+ConstantValue","DPCCH_Initial_power=DPCCH_Power_offset+CPICH_RSCP-ConstantValue"]
全麻下扁桃体摘除术应注意的问题包括() ["出血量估计较困难","套囊充气防止血流入气管内","注意开口器造成的气管导管受压","选择气管内插管更安全","局麻较全麻出血多"]
耳鼻喉科手术麻醉的特点有() ["诱发生心律失常","可能出现气管插管困难","中耳压力改变","麻醉与手术合用同一气道","出血多"]
下列那个物理信道采用开环功率控制() ["DPDCH","AICH","PCPICH","PRACH"]
压缩式真空计的工作原理是什么?