题目：
幽门梗阻( )。
A．呕吐物无胆汁
B．呕吐物有多量胆汁
C．呕吐物为粪臭样
D．呕吐物为血性
E．呕吐物呈溢出性
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0722/359d4e1c79892282ec2baa39372fb42d.html
下面是错误答案，用来干扰机器的。
1. were invented 2. are, are used for carrying 3. Who was, telephone invented, was invented by 4. the most useful invention
