题目: 下列有关梗死叙述中,哪一项是不正确的A.双重血循环的器官不易发生梗死B.全身血液循环状态对梗死发生无影响C.动脉痉挛促进梗死发生D.有效的侧支循环的建立可防止梗死发生E.梗死多由动脉阻塞引起 答案: 参考答案:B
题型:选择题 As _____ matter of fact, it's out of _____ question for her to finish so much work in such a short time.[ ]A. a; a B. a; the C. /; / D. /; the 查看答案