重型霍乱患者的补液量应该为()
A.3000~4000ml
B.4000~5000ml
C.5000~6000ml
D.6000~8000ml
E.8000~12000ml
参考答案:E
方程3x(x+1)=3x+3的解为 [ ]
A.x=1
B.x=-1
C.x1=0,x2=-1
D.x1=1,x2=-1
Electronic Chart Display and Information system can assist the mariner in().
A.voyage plan
B.stability calculate
C.calculate ETA
D.monitor strength