已知:A、B、C、D、E、F均为初中化学常见物质,几种物质之间存在如图所示的转化

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问题:

已知:A、B、C、D、E、F均为初中化学常见物质,几种物质之间存在如图所示的转化关系(反应条件均已略去).

(1)若A、B、C、D在常温下为气体,且反应

①、②、③均为化合反应.则A的化学式为______,C的化学式为______,反应③的化学方程式为______.

(2)若反应②为分解反应,B为金属氧化物,在反应②中B可以起到类似于MnO2的作用.F在常温下为黑色固体.反应①、②中部分产物已略去.则F的化学式为______,反应①的化学方程式为______,反应②的化学方程式为______.

考点:分解反应化合反应化学反应方程式的书写文字表达式化学式的写法和意义
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This is a true story . One evening a woman was   36    home when she saw a truck close behind her . She drove more quickly to be far away from the truck ,   37    when she sped up (加速),the truck did ,too. The   38   she drove , the faster the truck drove . The woman felt afraid , so she drove onto a main street , hoping to   39  the truck in a traffic . But the truck jumped a   40  light and went on running after her .

Finally the woman drove her car into a service station ,and got out of her car ,shouting for   41  .  The truck driver didn' d leave , instead he went out of his car .  He   42   the back door , and pulled out a man hidden (藏)in the back seat . The woman was running from the wrong person .the woman was   43  at last .

From the place where the woman stopped her car , the driver   44 a criminal (罪犯)in the woman' s car . The driver drove after her not to   45   her but to help her .

小题1:A. running         B. walking       C. driving.

小题2:A. but             B. though        C.  or.

小题3:A. bigger          B. faster         C. happier.

小题4:A. lose            B. look          C. come

小题5:A. black           B. red           C. green.

小题6:A. advice          B. suggestion    C. help

小题7:A. cleaned         B. opened       C. bought.

小题8:A. safe            B. healthy        C. free

小题9:A. forgot          B. found          C. put.

小题10:A. harm          B. visit.        C. save.

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女,25岁。车祸伤后胸闷不适。体格检查:左肺呼吸音明显减弱。胸片:左肺压缩70%,两侧肋膈角清晰。行胸腔闭式引流时,插管应位于()

A.锁骨中线第2肋间

B.锁骨中线第5肋间

C.腋前线、腋中线间第6~8肋间

D.腋中线、腋后线间第6~8肋间

E.以上都不是

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关于细胞膜上的钠钾泵,下列哪些叙述不对()

A.钠钾泵具有ATP酶活性

B.乌本苷可增强钠钾泵的活性

C.钠钾泵的本质是蛋白质

D.钠钾泵仅存在于部分动物细胞膜上

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武术运动中的“八法”是指()这八种方法。

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与通常的硬切换相比,接力切换除了要进行硬切换所进行的测量外,还要对符合切换条件的相邻小区的()参数进行测量、计算和保持。

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