钛合金管的连接方式采用()。
A.焊环活套法兰连接
B.翻边活套法兰连接
C.氧—乙炔焰焊接
D.螺纹连接
参考答案:A
解析:
钛合金管采用法兰连接时,只能采用焊环活套法兰连接。
Norwood I 期手术中,Sano分流术的优点有()
A.较高的主动脉舒张压
B.减少主动脉窃血
C.术后相对稳定的血流动力学
D.减少潜在的冠状动脉缺血
E.不破坏右心室的完整性
A client who has discovered a breast lump is tearful and expresses concern over her situation. The best way for the nurse to respond to her is by
A.encouraging a discussion of her problems and fears.
B.asking her if she would like to talk to the chaplain.
C.giving her reassurance.
D.recommending a support group.