【单选题】
某压力表刻度为O一100kPa,在50kPa处计量检定值为49.5kPa,那么在50kPa处仪表的绝对误差、示值相对误差、仪表引用误差分别是()。
A、0.5kPa,0.5%,1%
B、0.5kPa,0.5%,0.5%
C、0.5kPa,1%,1%
D、0.5kPa,1%,0.5%
A、0.5kPa,0.5%,1%
B、0.5kPa,0.5%,0.5%
C、0.5kPa,1%,1%
D、0.5kPa,1%,0.5%