主动脉瓣狭窄的听诊特点错误的是
A. 主动脉瓣区第二心音减弱或消失
B. 第二心音逆分裂
C. 胸骨右缘第二肋间收缩期杂音
D. 该杂音在蹲位时减弱
E. 瓣膜严重钙化时该杂音减轻或消失
A seller has withdrawn from a project midway though execution and another seller is taking
A. Introduce team members .
B. Communicate the objectives of the project .
C. Assert authority .
D. Create a communications plan .
All of the following are tools for scope verification EXCEPT
A. Product reviews
B. Audits
C. Walk through
D. Sensitivity analysis
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