1. [多选题]血管性血友病各分型中，vWF大分子多聚体缺失的是（ ）。
A. 1型
B. 2A型
C. 2B型
D. 2N型
E. 3型
2. [多选题]造血物质缺乏或利用障碍所致的贫血有
A. 失血性贫血
B. 营养性巨幼细胞性贫血
C. 铁粒幼细胞性贫血
D. 溶血性贫血
E. 骨髓病性贫血
3. [多选题]APTT和PT都延长多见于 ( )
A. 内源性凝血途径缺陷所引起的出血性疾病
B. 外源性凝血途径(extrinsic route of blood coagulation)缺陷所引起的出血性疾病
C. 共同凝血途径缺陷所引起的出血性疾病
D. 血液循环中存在抗凝物质
E. 各种血栓与止血改变处于代偿阶段
4. [多选题]The blood is examined in order to answer following principal questions
A. Is themarrow producing sufficient numbers of mature cells in the hematopoietic lineages
B. Are the red cells in the blood normal
C. Are the leukocytes in the blood normal
D. Is the development of each hematopoietic lineages qualitatively normal
E. Are the platelets in the blood normal
