A . (A)φ73³9.5
B . (B)φ89³12
C . (C)φ73³9.5或φ89³12
D . (D)φ349.5³13
[单选题]辐射段内炉管与炉衬的距离是()管径。A . (A)0.5个B . (B)1个C . (C)1.5个D . (D)2个
[单选题]细段管径小,管壁上皮细胞为A.单层立方体形细胞B.单层扁平上皮C.单层柱状上皮D.单层立方体形或锥体形细胞E.复层扁平上皮
[单选题,B1型题] 细段管径小,管壁上皮细胞为()A . 单层立方体形细胞B . 单层扁平上皮C . 单层柱状上皮D . 单层立方体形或锥体形细胞E . 复层扁平上皮
[单选题]CT测量右肺动脉心包段管径的理想部位为A.右肺动脉起始部B.右肺叶间动脉经上腔静脉与中间支气管之间至肺门C.左、右主支气管前方右肺动脉D.右肺上叶支气
[单选题]CT测量右肺动脉心包段管径的理想部位为()。A .右肺动脉起始部B .右肺叶间动脉经上腔静脉与中间支气管之间至肺门C .左、右主支气管前方右肺动脉D . D.右肺上叶支气管前内侧肺动脉E .右肺门区右肺动脉
[单选题]CT测量右肺动脉心包段管径的理想部位为A.右肺动脉起始部B.右肺叶间动脉经上腔静脉与中间支气管之间至肺门C.左、右主支气管前方右肺动脉D.右肺上叶支气
[单选题]CT测量右肺动脉心包段管径的理想部位为()A . 右肺动脉起始部B . 右肺叶间动脉经上腔静脉与中间支气管之间至肺门C . 左、右主支气管前方右肺动脉D . 右肺上叶支气管前内侧肺动脉E . 右肺门区右肺动脉
[单选题]CT测量右肺动脉心包段管径的理想部位为A.右肺动脉起始部B.右肺叶间动脉经上腔静脉与中间支气管之间至肺门C.左、右主支气管前方右肺动脉D.右肺上叶支气
[单选题]CT测量右肺动脉心包段管径的理想部位为A.右肺动脉起始部B.右肺叶间动脉经上腔静脉与中间支气管之间至肺门C.左、右主支气管前方右肺动脉D.右肺上叶支气
[问答题] 某加热炉辐射段热负荷为8200kw,辐射管为φ127×12000×8,共64根,求辐射管表面热强度qR?