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【简答题】
（8分）为了测定Na 2 CO 3 与Na 2 SO 3 混合物中各组分的含量，取样品23.2g以下图所示装置（铁架台、铁夹等仪器未在图中画出）进行实验： （1）将仪器连接好以后，必须进行的第一步操作是 ； （2）装置B的作用是 ； （3）已知装置C中装有品红溶液， 其作用是 ； （4）实验室中备有以下常用试剂：a.浓硫酸 b. 品红溶液 c. 酸性高锰酸钾溶液 d. 饱和碳酸氢钠溶液 e. 氢氧化钠溶液 f. 无水硫酸铜 g. 碱石灰 请将下列装置中放的试剂的序号填在横线上： B中放 ，D中放 ，F中放 ； （5）若装置E在实验完成4.4g，则Na 2 CO 3 与Na 2 SO 3 的物质的量之比为 。
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【简答题】the State Council
【简答题】枳实薤白桂枝汤组成中含有的药物是
【单选题】The State Council will lay down new rules that aim to make management compatible with internationally accepted conventions.
A.
conferences
B.
conversations
C.
practices
D.
formations
【单选题】According to China's Food Safety Law, ______________ in February 2009, the State Council established the Food Safety Committee to oversee a chain of departments.
A.
as is passed
B.
as it was passed
C.
which is passed
D.
which was passed
【单选题】The State Council will lay down new rules that aim to make management compatible with internationally accepted ______.
A.
conferences
B.
inscriptions
C.
practices
D.
formations
【单选题】A draft regulation on school bus safety management was made public by the State Council, with the public________to give comments.
A.
to invite
B.
inviting
C.
invited
D.
having invited
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