最能反映微循环灌流变化的指标是()。
A.血压
B.中心静脉压
C.心输出量
D.氧供应
E.肺毛细血管楔压
参考答案:D
—Please sit down and I’ll cook you some coffee.
— ____Let’s come to the point first.
A.You are welcome
B.You needn’t do so
C.Please don’t bother
D.You are indeed too polite
若a>b,则下列不等式正确的是( )
A.4a<4b
B.-4a<-4b
C.a+4<b+4
D.a-4<b-4