搜题请搜索小程序“爱下问搜题”
问题
单项选择题
气虚引起出血的理论基础是（）
A．气血辨证
B．阴阳辨证
C．表里辨证
D．虚实辨证
E．寒热辨证
答案
参考答案：
B
选择题
— Where _____ the recorder? I can't see it anywhere.
— I _____ it right here. But now it's gone!
A. did you put; have put
B. have you put; put
C. had you put; was putting
D. were you putting; have put
查看答案
填空题
背压阀的作用是使液压缸的回油腔具有一定的压力，保证（）。
查看答案
