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【单选题】
周先生, 80岁。患慢性肺源性心脏病,病人发生右心衰竭时,首选的治疗措施是A.
用利尿剂降低心脏前负荷
B.
用洋地黄药物增加心脏泵功能
C.
用血管扩张剂降低右心前后负荷
D.
控制呼吸道感染，改善呼吸功能，纠正缺氧和二氧化碳潴留
E.
气管插管机械通气
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【简答题】小学教育心理学常用的描述性研究方法包括 与 。
【简答题】Anna lived on the side of a valley. One winter, there was a very big flood, and a lot of houses 1 Anna's were washed away. Anna's house was high enough to escape the flood, so when the water had disap...
【多选题】在风管“类型属性”对话框下的“布管系统配置”包含以下哪些构件设置（）。
A.
弯头
B.
活接头
C.
多形状过渡件矩形到圆形
D.
多形状过渡件圆形到矩形
E.
过渡件
【简答题】Anna lived on the side of a valley. One summer, there was a very big , and a lot of houses down below Anna’s were washed away. Anna’s house was enough to escape the flood, so when the water had and th...
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