尿素与H<sub>2</sub>O双组分体系液固平衡相图中,其尿素结晶线上各点组成都是饱和尿素溶液,是()相共存线。
A、气相
B、冰相
C、液相
D、固相
A、气相
B、冰相
C、液相
D、固相
A、(a)H<sub>2sub>O(l,373K,100kPa)与(b)H<sub>2sub>O(g,373K,100kPa) B、(a)H<sub>2sub>O(l,373K,200kPa)与(b)H<sub>2sub>O(g,373K,200kPa) C、(a)H<sub>2sub>O(l,374K,100kPa)与(b)H<sub>2sub>O(g,374K,100kPa) D、(a)H<sub>2sub>O(l,373K,100kPa)与(b)H<sub>2sub>O(g,373K,200kPa)
A、CO<sub>2sub>和H<sub>2sub> B、CO<sub>2sub>和H<sub>2sub>O C、CO和H<sub>2sub> D、CO和H<sub>2sub>O
A、H<sub>2sub>O B、CO<sub>2sub>、H<sub>2sub>O C、细胞物质、CO<sub>2sub>、H<sub>2sub>O D、污泥、CO<sub>2sub>、H<sub>2sub>O
A、C+O<sub>2sub>=CO<sub>2sub> B、C+O<sub>2sub>=CO C、CO+H<sub>2sub>O=CO<sub>2sub>+H<sub>2sub> D、C+H<sub>2sub>O=CO+H<sub>2sub>
A、H<sub>2sub>B<sub>3sub>O<sub>6sub> B、H<sub>2sub>B<sub>4sub>O<sub>7sub> C、H<sub>2sub>B<sub>2sub>O<sub>3sub> D、H<sub>2sub>B<sub>3sub>O<sub>5sub>
A、CS<sub>2sub>+H<sub>2sub>O→COS+H<sub>2sub>S B、CS<sub>2sub>+2H<sub>2sub>O→CO<sub>2sub>+2H<sub>2sub>S C、CS<sub>2sub>+H<sub>2sub>O→CO+H<sub>2sub>S D、2CS<sub>2sub>+H<sub>2sub>O→2COS+<sub>2sub>
A、C<sub>nsub>H<sub>2n+2sub>O<sub>2sub> B、C<sub>nsub>H<sub>2nsub>O<sub>2sub> C、C<sub>nsub>H<sub>n+2sub>O<sub>2sub> D、C<sub>nsub>H<sub>2n+1sub>O<sub>2sub>
A、C+O<sub>2sub>→CO<sub>2sub>+Q,C+O<sub>2sub>→CO+Q B、CO<sub>2sub>+C→CO-Q,CO+H<sub>2sub>→CH<sub>4sub>+H<sub>2sub>O+Q. C、C+O<sub>2sub>→CO+Q,C+H<sub>2sub>O→CO+H<sub>2sub>-Q D、CO<sub>2sub>+C→CO-Q,C+H<sub>2sub>O→CO+H<sub>2sub>-Q