脐疝的发生与哪项有关() ["A．感染","B．脐部的解剖特点","C．腹壁肌肉和筋脉发育","D．腹壁外伤","E．各种使腹腔压力增高的原因"]
经肺部吸收速释制剂可口服、口含、舌下和粘膜用药有溶液型、乳剂型、混悬型的 ["A、膜剂","B、气雾剂","C、软膏剂","D、栓剂","E、缓释片"]
低钾血症的临床表现包括() ["A．心率增快","B．肠鸣音亢进","C．u波出现","D．腱反射减弱","E．心电图示T波增宽，低平"]
7岁男孩，髋骨脱位，其治疗方法为() ["A．髋臼造架术","B．髋臼成形术","C．股骨缩短截骨术","D．股骨旋转截骨术","E．复位支具固定"]
气雾剂中的潜溶剂（）。 ["A.氟氯烷烃","B.丙二醇","C.泊洛沙姆","D.枸橼酸钠","E.羟苯乙酯"]
Freon聚乙烯醇聚乙二醇400
