置管前导管端有"吱"声,病人突然紫绀、神志消失,随后心跳骤停
A.低渗性脱水B.高渗性缺水C.等渗性缺水D.高血钾E.低血钾
参考答案:D
There is ________ juice or ________ vegetables in the fridge . So we must buy some today .
A.few , little
B.a little , a few
C.little , few
D.a few , a little
IPOA协议主要完成两个功能:()、数据包格式转换和数据封装