引起右心室后负荷增加的疾病是()
A.主动脉瓣关闭不全
B.三尖瓣关闭不全
C.房间隔缺损
D.阻塞性肺气肿
E.动静脉瘘
参考答案:D
Any help from you will be greatly appreciated. Please give me a reply at your earliest ____. [ ]
A. interruption
B. instruction
C. consideration
D. convenience
对于混凝土原材料进场初验工作应该在()小时内完成,实验室负责检测,物资部全程旁站。
A、1
B、2
C、3
D、4