维生素D缺乏性佝偻病不正确的预防措施是() ["A.适当多晒太阳","B.提倡母乳喂养","C.孕母补充维生素D及钙剂","D.及时添加辅食","E.早产儿2个月开始补充维生素D"]
地球上天天都有地震发生,而且多到一天就要发生一万多次,其中能造成破坏的约有一千次。一般情况下,()以上才感觉,称为有感地震。 ["2级","3级","4级","5级"]
食管癌中、晚期可见() ["吞咽困难","声嘶","两者均可","两者均不可"]
维生素D缺乏性手足搐搦症的隐性体征是() ["喉痉挛","Kerning(凯尔尼格)征阳性","Brudzinski(布鲁津斯基)征阳性","Trousseau(陶瑟)征阳性","Babinski(巴宾斯基)征阳性"]
《秋夜》中象征手法
刚性需求