RS-232是一种串行总线接口标准,其中RS是RunSystem的缩写。
参考答案:错
The road ________ for vehicles is under repair. Drivers are required to take some other routes. [ ]
A. intending
B. intended
C. to intend
D. being intended
仰卧位时腹痛明显、前倾位或俯卧位时减轻,提示何种疾病()。
A.十二指肠淤滞症
B.胰体癌
C.反流性食管炎
D.胃黏膜脱垂
E.胃溃疡