日韩亚洲一区中文字幕,日韩欧美三级中文字幕在线,国产伦精品一区二区三区,免费在线欧美性爱链接

      1. <sub id="o5kww"></sub>
        <legend id="o5kww"></legend>
        <style id="o5kww"><abbr id="o5kww"></abbr></style>

        <strong id="o5kww"><u id="o5kww"></u></strong>
        1. }Ŀ2018҇(gu)_(ki)˭h(hun)(yn)ģʽڭh(hun)

          A.T܇(ch)

          B.·ˮЇF

          C.͵طٟ

          D.ʹíh(hun)ُ(gu)

          𰸡C

          AT ܇(ch)p܇(ch)βŷx(xing)_}

          B·ˮЇFpٷۉmȾx(xing)_}⣻

          C͵طٟ(hu)a(chn)жкwȾ՚,ڭh(hun)x(xing)e(cu)`}

          Dʹíh(hun)ُ(gu)ڭh(hun)x(xing)_}

          xC

          (x)(c)ϵд
          P(gun)(x)}

          ĿлW(xu) (li)Դ

          }ĿijͬW(xu)(sh)(yn)r(sh)l(f)F(xin)ʢNaOHҺƿcƤаɫĩF(xin)̽@NɫĩijɷO(sh)Ӌ(j)Œ(sh)(yn)Ո(qng)Ɍ(sh)(yn)(bo)森

          (sh)(yn)E

          (sh)(yn)F(xin)

          Y(ji)Փͷ(yng)ĻW(xu)ʽ

          1)

          ɫĩˮγɟo(w)ɫҺ

          /

          2)

          ̪׃t

          ҺʉA

          3)

          Һɼtɫ׃?yu)o(w)ɫКݮa(chn)a(chn)ĚwʹȼľlϨ磮

          Һк
          ɫĩКc׃|(zh)ɵa(chn)wķʽ

          ԓ(sh)(yn)Ccѽ(jng)׃|(zh)P(gun)ʽ

          鿴𰸺ͽ>>

          ĿлW(xu) (li)Դ

          }ĿճеиM|(zh)ǰߌڻߌچ|(zh)ǣ

          A.ȻcF

          B.՚⡢ˮ

          C.t(y)þƾ

          D.ˮҺ

          鿴𰸺ͽ>>

          ĿлW(xu) (li)Դ

          }Ŀ|(zh)ķ(li)_ǣ

          A.AAAʯ

          B.ٲϣϽ

          C.wгԪأ}̼c

          D.ЙC(j)ƾ̼c

          鿴𰸺ͽ>>

          ĿлW(xu) (li)Դ

          }Ŀ^(gu)(H2O2)W(xu)|(zh)

          A.ԭӺԭB.Ӻ

          C.ԪغԪD.^(gu)

          鿴𰸺ͽ>>

          ĿлW(xu) (li)Դ

          }Ŀˮ֮ԴҲ(li)FYԴP(gun)ˮ_

          A.ˮcϵõ

          B.ˮɚԭӺԭӘ(gu)ɵ

          C.÷ˮ^(q)Ӳˮܛˮ

          D.(jng)^(gu)^(gu)VˮЛ](mi)s|(zh)

          鿴𰸺ͽ>>

          ĿлW(xu) (li)Դ

          }Ŀ|(zh)|(zh)ں̶ܴϛQ|(zh);e(cu)`

          A.ÝB. Al(OH)3 кθҺ^(gu)θ

          C.ϡ}ȥٱPD.ÚcҺ

          鿴𰸺ͽ>>

          ĿлW(xu) (li)Դ

          }Ŀ|(zh)Ќǣ

          A.cB.C.D.ˮ

          鿴𰸺ͽ>>

          ĿлW(xu) (li)Դ

          }Ŀ㞡R9NԪ(du)ԭ|(zh)Ĝy(c)׿ԽؕI(xin)Ї(gu)ƌW(xu)

          A.T(mn)зB.ɏC.aD.D

          鿴𰸺ͽ>>

          ͬ(x)(c)