下列哪一种先天性心脏病不属于左向右分流型（）
A.肺动脉狭窄
B.室间隔缺损
C.动脉导管未闭
D.房间隔缺损
E.以上都不是
参考答案：A
His death in a car accident was _____ and we all got _____ at the news.
A．shocking; shocked
B．shocked; shocking
C．shocking; shocking
D．shocked; shocked
BSC中有哪些计算机单元？其冗余方式是什么？
