使用止血带止血时应注意:止血带放置部位尽量靠近伤口,一般情况下,上肢出血扎在上臂上1/3处,(且不可放了上臂下1/3处,以免压迫损伤桡神经)。
参考答案:对
The animals that are having winter sleep look___________ dead. You can't wake them
up by touching. [ ]
A. as well as
B. as good as
C. as far as
D. as soon as
以下哪种编码对于比特1采用正负电平交替表示?()
A.非归零反相编码(NRZ-I)
B.归零编码(RZ)
C.曼彻斯特编码
D.信息交替反转码(AMI)