A . <5~7ml
B . <50~70ml
C . >50~70ml
D . >5~7ml
E . >250ml
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.>5~7mLB.<5~7mLC.>50~70mLD.<50~70mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.>5~7mLB.<5~7mLC.>50~70mLD.<50~70mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL
[单选题]上消化道出血出现黑便时,出血量至少为( )。A.<5~7mLB.<50~70mLC.>50~70mLD.>5~7mLE.>250mL