心包斜窦
参考答案:
在左心房后壁与后部心包壁层之间留有腔隙,其两侧界为左肺静脉、右肺静脉和下腔静脉,称心包斜窦。
—What does he do?
—He's a businessman. [ ]
A. What's he doing
B. What's his job
C. What does he want
D. How is he
数据挖掘中的数据质量包括()
A.数据的真实性
B.数据的完备性
C.数据的自洽性
D.数据的开放性