A.3
B.5
C.10
D.20
[单选题]A.只有①,②正确B.只有②,③正确C.只有②,④正确D.只有③,④正确
[单选题]A.只有①,②正确B.只有②,③正确C.只有②,④正确D.只有③,④正确
[单选题]A.3B.5C.10D.20
[单选题]A.3B.5C.10D.20
[单选题]A.测白细胞碱性磷酸酶B.抽血验嗜异凝集试验C.咽拭子培养+药敏试验D.骨髓穿刺细胞分类E.淋巴结穿刺液涂片或淋巴结活组织检查
[单选题]A.3B.5C.10D.20
[单选题]A.B.hgzy-t876jpgC.D.
[单选题]A.u(t)=155.56sin(ωt-5°)VB.C.D.u(t)=155.56sin(314t-60°)V