单项选择题
A.5%,1B.5%,2C.10%,1D.10%,2
A.±1,0.03,0.04B.±2,0.03,0.05C.±2,0.02,0.04D.±1,0.02,0.05
A.800,1250B.900,1500C.800,1500D.900,1250