等中心给角照射食管癌,允许误差为()
A、±0.1°
B、±0.2°
C、±0.3°
D、±0.4°
E、±0.5°
参考答案:A
________writing the article,the author forgot that he had a meeting to attend.
A.Absorbed in
B.Absorbing at
C.To absorb in
D.Having absorbed by
在非感染性发热中,属变态反应性疾病的是( )
A.中暑B.大面积烧伤C.重度安眠药中毒D.急性心肌梗死E.血清病