二尖瓣关闭不全的收缩期杂音
A.一贯型
B.递增递减型
C.递增型
D.连续型
E.递减型
参考答案:A
解析:2.因动静脉瘘的血液分流持续存在,故出现连续性杂音。
下面的条目中, ______ 是IBM数据仓库三层结构中的组成部分。 Ⅰ.OLTP业务系统 Ⅱ.前台分析工具 Ⅲ.数据仓库Ⅳ.数据集市
A.Ⅰ、Ⅱ和Ⅲ
B.Ⅰ、Ⅱ和Ⅳ
C.Ⅰ、Ⅲ和Ⅳ
D.Ⅱ、Ⅲ和Ⅳ
C
Why did the famous teacher use a $100 bill at his lesson ( )
A.Because he wanted to make the bill into a ball.
B.Because he used to drop a bill on the floor and stepped on it.
C.Because he was going to give the bill to one of his students.
D.Because he wanted to make the students know what value was.