A.仰臥位B.頭高足低位C.頭低足高位D.側(cè)臥位E.仰臥位頭偏向一側(cè)
A.100-200ml B.300-400ml C.500-1000ml D.1200-1500ml E.1800-2000ml
A.20% B.25% C.30% D.16% E.75%