食管狭窄球囊成形术的适应症下列哪个是错误的()
A.各种良性病变引起的狭窄
B.食管癌伴食管气管瘘
C.食管外压性狭窄
D.手术后瘢痕狭窄
E.以上皆不是
参考答案:B
. Could I speak to __________ is in charge of International Sales, please?
A.anyone
B.someone
C.whoever
D.no matter who
下列是急性肾功能不全紧急透析指征的是()
A.无尿2日以上
B.血肌酐大于442μmol/L
C.难以控制的高血压
D.血钾6.4mmol/L,心电图正常
E.血钾7.0mmol/L,伴有高钾血症的心电图改变