乳腺摄影X线的特点是
A.波长较短
B.波长较长
C.X线能量低
D.X线穿透力较强
E.X线穿透力较弱
参考答案:B,C,E
解析:乳腺X线摄影使用软射线。
179. This is the best book ______ I have been looking for all this year.
A.who
B.whom
C.which
D./
男性,46岁,体重60kg,Ⅱ°烧伤面积50%,医嘱大量补液,第一天补液总量应为()
A.4500ml
B.5400ml
C.6000ml
D.6500ml
E.8000ml