【名词&注释】
室间隔缺损(ventricular septal defect)、先天性心脏病(congenital heart disease)、肺动脉瓣(pulmonary valve)、弱酸性(weak acidic)
[单选题]某弱酸性(weak acidic)药在pH为5时约90%解离,其pKa为()
A. 6
B. 5
C. 4
D. 3
E. 2
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学习资料:
[单选题]On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as()
A. cooling jacket
B. cylinder liner
C. piston crown
D. cylinder cover
[多选题]下列哪些先天性心脏病X线检查主动脉影可能缩小()
A. 室间隔缺损
B. 法洛四联症
C. 肺动脉瓣狭窄
D. 房间隔缺损
E. 动脉导管未闭
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