与血小板生成有关的细胞是
A.粒细胞
B.巨核细胞
C.浆细胞
D.淋巴细胞
E.单核细胞
参考答案:B
Control of flooding should be addressed().
A.first
B.following control of fire
C.following restoration of vital services
D.only if a threat exists
单侧肺通气时V/Q比值()
A.正常
B.通气侧等于非通气侧
C.通气侧小于非通气侧
D.增加
E.减少