可用于制备脂质体的材料是
A．羟丙基甲基纤维素B．单硬脂酸甘油脂C．大豆磷脂D．无毒聚氯乙烯E．乙基纤维素
参考答案：C
________you were coming，I would have stayed at home.
A．If I know
B．Should I know
C．Had I known
D．If I should have known
病史：女性，55岁，胸闷、气短5天，加重1天。诊断（）
A.右上肺炎
B.左下肺不张
C.左侧胸腔积液
D.左肺癌
E.气胸
