脉压与平均动脉压有何不同？
参考答案：
脉压指收缩压与舒张压之差，而平均动脉压指舒张压加1／3脉压。
— My room gets very cold at night.
— ________. [ ]
A. So is mine
B. So mine is
C. So does mine
D. So mine does
试述分散进货机机的具体形式及各具体形式优缺点。
