节水龙头反漏水，原因何在？据北京市技术监督局1999年上半年对市场所做的一项抽查显示，在50种陶瓷片水龙头中，合格仅14种，抽样合格率为28％。陶瓷片密封水龙头是90年代兴起的新一代水龙头产品，以美观耐用和节水受到消费者欢迎。但从抽查情况看，这种水龙头不但不节水，反? What is the reason for the anti-leakage water tap? According to a spot check conducted by the Beijing Municipal Bureau of Technical Supervision on the market in the first half of 1999, only 14 of the 50 types of ceramic faucets were qualified, and the sampling pass rate was 28%. The ceramic sealing faucet is a new generation of faucet products that emerged in the 1990s. It is beautiful and durable, and water-saving is welcomed by consumers. However, from the spot check situation, this faucet is not only not water-saving, but instead?