急性心肌梗死患者发生左心衰竭的主要原因是
A．肺部感染B．心脏负荷加重C．房室传导阻滞D．情绪激动E．心肌收缩力减弱和不协调
参考答案：E
氯化聚乙烯防水卷材外观质量要求：卷材表面应无气泡、疤痕、裂纹、粘结和孑L洞。卷材的平直度不应大于50mm，平整度不应大于______mm。卷材允许有一处接头，接头处应剪切整齐，并应加长150mm备作搭接。
A．10
B．20
C．30
D．40
All of the following are components of the Code of Ethics EXCEPT:（）
A. striving to maintain and improve their competence and the competence of others in the profession.
B. demonstrating diligence, independence, and thoroughness when preparing investment reports.
C. acting with integrity, competence, respect, and in an ethical manner when dealing with others.
