下列哪些是弹簧圈类栓塞物质()
A.不锈钢圈
B.NT海/球栓
C.微型铂金丝圈
D.微球
E.明胶海绵
参考答案:A, B, C
My computer game is _____ the drawer and my books are _____ the sofa. [ ]
A. on; on
B. in; in
C. on; in
D. in; on
嗜碱性点彩红细胞形成的原因为
A.胞浆内残留的DNA变性B.胞浆内残留的RNA变性C.胞浆内染料的沉积D.胞核的碎片E.细胞的退化