引起肺心病的最常见原发疾病是（） ["慢性支气管炎并发肺气肿","肺结核病","肺血管疾病","严重脊柱弯曲","严重胸廓畸形"]
溶茵酶是一种黏多糖水解酶，能溶解细菌的（）。 ["细胞核","细胞蛋白","细胞壁","DNA","RNA"]
库肯勃瘤是（） ["良性卵巢肿瘤","原发于胃肠道卵巢转移性肿瘤","囊性肿瘤","子宫肌瘤红色变","纤维瘤"]
裂腹畸形的正确描述是（）①胎儿真性腹壁缺损，从脐部裂开，内脏通过裂孔脱出②脱出内容物既无疝囊，又无皮肤覆盖③脱出物外包裹一透明膜④胎儿横膈有缺损 ["①","①②","①②③","①②③④","①③④"]
下列哪项增加心脏的容量负荷（） ["阻塞性肺部疾病","主动脉瓣关闭不全","主动脉瓣狭窄","高血压","肺动脉栓塞"]
简述测量推力瓦间隙方法。
