单选题:T细胞分化、发育、成熟的场所是 题目分类:临床执业医师 题目类型:单选题 查看权限:VIP 题目内容: T细胞分化、发育、成熟的场所是 A.脾 B.胸腺 C.骨髓 D.淋巴结 E.心脏 参考答案: 答案解析:
强心苷治疗心房颤动的主要机制是 强心苷治疗心房颤动的主要机制是A.缩短心房有效不应期 B.延长心房有效不应期 C.降低窦房结自律性 D.降低心房异位节律点自律性 E.减慢房室传导 分类:临床执业医师 题型:单选题 查看答案
What is the author's tone toward the Northern Lights? What is the author's tone toward the Northern Lights?A.Indifferent. B.Sarcastic. 分类:临床执业医师 题型:单选题 查看答案
When a large star explodes, the gravity compacts ever piece When a large star explodes, the gravity compacts ever piece into __________A.the 分类:临床执业医师 题型:单选题 查看答案