题干

某储能电池的原理如图所示,溶液中c(H) =" 2.0" mol·L1,阴离子为SO42,a、b均为惰性电极,充电过程中左槽溶液颜色由蓝色变为黄色。下列叙述正确的是

A:当右槽溶液颜色由绿色变为紫色时,电池中能量转化形式为化学能转化为电能

B:充电过程中,a极的反应式为VO2-e+ H2O = VO2+ 2H

C:储能电池a、b两极间的电解质溶液中通过电子的定向移动形成闭合回路

D:放电时, H从左槽迁移进入右槽

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B

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阅读短文,从每题所给的四个选项(A、B、C、和D)中,选出最佳选项.

        Salvador Dali (1904-1989) was one of the most popular of modern artists. The Pompidou Centre in Paris is showing its respect and admiration for the artist and his powerful personality with an exhibition bringing together over 200 paintings, sculptures, drawings and more. Among the works and masterworks on exhibition the visitor will find the best pieces, most importantly The Persistence of Memory. There is also L’Enigme sans Fin from 1938, works on paper, objects, and projects for stage and screen and selected parts from television programmes reflecting the artist's showman qualities.

        The visitor will enter the World of Dali through an egg and is met with the beginning, the world of birth. The exhibition follows a path of time and subject with the visitor exiting through the brain.

        The exhibition shows how Dali draws the viewer between two infinities (无限). “From the infinity small to the infinity large, contraction and expansion coming in and out of focus: amazing Flemish accuracy and the showy Baroque of old painting that he used in his museum-theatre in Figueras,” explains the Pompidou Centre.

        The fine selection of the major works was done in close collaboration (合作)with the Museo Nacional Reina Sofia in Madrid, Spain, and with contributions from other institutions like the Salvador Dali Museum in St. Petersburg, Florida.