- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
心肺復(fù)蘇時(shí)按壓與放松間隔比為()
A.40%∶60%
B.45%∶55%
C.50%∶50%
D.60%∶40%
E.70%∶30%
