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[单选题]
差压计的测量范围为0~53kPa,在检定34.13kPa时,被校表读数为34.26kPa,该差压计的相对引用误差为()。
A.±0.25%
B.-0.25%
C.0.25%
D.0.5%
查看答案
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A.±0.25%
B.-0.25%
C.0.25%
D.0.5%
A.-0.0005%≤比值差≤+0.0005%
B.-0.0001%≤比值差≤+0.0001%
C.-0.01%≤比值差≤+0.01%
D.-0.001%≤比值差≤+0.001%
A.-40~0kPa
B.-20~+20kPa
C.-60~-20kPa
D.-70~-30kPa