19、关于校准与检定,下列说法正确的是( ABCE )P146Ð Ñ;É
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A、检定是对计量器具的计量特性进行全面评定Ð Ñ;É
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B、校准主要是确定计量器具的量值和误差Ð Ñ;É
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C、检定具有法制性 Ð Ñ;É
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D、校准具有法制性Ð Ñ;É
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E、校准不判断计量器具的合格与否Ð Ñ;É
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