【单选题】【消耗次数：1】
测量与计量的类同与区别：?①计量和测量都是比较的过程，只是比较对象、误差源不同?②计量是利用技术和法制手段实现单位统一和量值准确可靠的测量?③计量是测量的基础和依据?④没有测量，就没有计量；没有计量，测量就失去意义?
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