伯利克里说：“我可断言，我们每个公民，在许多生活方面，能够独立自主；并且在表现独立自主的时候，能够温文尔雅和多才多艺”。其中的“公民”是指

（2010·泸州）实验室有两瓶失去标签的溶液，一瓶是稀盐酸，另一瓶是氢氧化钠溶液，下列试剂中不能将它们鉴别出来的是（     ）

（如图甲所示是小华同学设计的一种测定油箱内油量的装置，其中R₀为定值电阻，R为压敏电阻，其阻值随所受压力变化的图象如图乙所示．油量表由量程为0～3V的电压表改装而成．已知油箱重80N，压敏电阻R能够承受的最大压力为800N，电源电压保持6V不变．

标准状况下VL氨气溶解在1L水中（水的密度近似为1g/ml），所得溶液的密度为ρ g/ml,质量分数为W，物质浓度为c mol/L，则下列关系中不正确的是

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     Comedy King Stephen Chow's upcoming film 'The Mermaid' has released its first trailer（预告片）.
     Actor Deng Chao, who plays the leading role in this film, appeared in the trailer by reporting his findings of a mermaid to the police.
    A series of hand-painted posters by the director come out along with the trailer.
    Set plot（情节） in the modern world, the film describes the story of a biological professor, who was saved by a mermaid, and then falls in love with the mermaid.
    So far, the film has unveiled（公开） its first official poster, with a photo of crashing waves, the title, and the director's name.
    The film also stars Kris Wu, Show Luo, and the new-face actress Lin Yun as the titular character.
    'The Mermaid' is scheduled to be released during China's Lunar New Year, on February 8th.