OSPF属于链路（）路由选择算法。
参考答案：状态
冷凝集试验使用的红细胞是（）
A.O型红细胞
B.AB型红细胞
C.A型红细胞
D.B型红细胞
E.绵羊红细胞
It turned out that he had forgotten to () the lens cap and all the pictures he had taken thus failed to develop.
A. remove
B. delete
C. erase
D. detach
