消化道出血患者出现黑粪提示每日出血至少有() ["10~20ml","30~50ml","50~100ml","100~200ml","200~300ml"]
消化道出血显像正确的说法是() ["显像剂必须采用99cmTc标记的红细胞","腹部异常放射浓聚位置固定无移动","消化道出血经常是间歇的,检查时需要多时相摄片","本检查仅适用于成年人","出血部位局灶性浓聚并可移动"]
人体的运动功能位置在前中央回的排列是() ["头面在上部,下肢在下部","躯体在上部,头面在下部","下肢在上部,头面在下部","头面在上部。上肢在下部","上述排列均不对"]
具有直接促进肠内钙磷的吸收,帮助骨骼钙化作用的是() ["7-脱氢胆甾醇","麦角醇","维生素D2","维生素D3","1α,25-二羟基维生素D2"]
330MW汽轮机润滑油冷油器在备用时()。 ["A、进油门开启;","B、出油门开启;","C、进水门关闭;","D、出水门开启。"]
腹泻概述