在硝酸酸性溶液中与硝酸银作用生成氯化银浑浊液,与一定量的标准氯化钠溶液在同一条件下生

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问题:

在硝酸酸性溶液中与硝酸银作用生成氯化银浑浊液,与一定量的标准氯化钠溶液在同一条件下生成的氯化银浑浊液比较,以检查供试品杂质的限量(),在盐酸酸性溶液中与氯化钡作用生成硫酸钡浑浊液,与一定量的标准硫酸钾溶液在同一操作条件下生成的浑浊液比较,以检查供试品中杂质的限量(),利用鲎试剂与细菌内毒素产生凝集反应,以判断供试品中细菌内毒素的限量(),系指用一定波长的光照射在薄层板上,对薄层色谱有吸收紫外光或可见光的斑点或对经照射能激发产生的斑点进行扫描,将扫描得到的图谱及积分数据用于药品分析()。

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题型:填空题

氯的原子序数为17,35Cl是氯的一种同位素,下列说法正确的是(  )

A.35Cl原子所含质子数为18

B.3.5g35Cl2气体的体积约为22.4L

C.

1
18
mol的1H35Cl分子所含中子数约为6.02×1023

D.35Cl2气体的摩尔质量为71g.mol-1

题型:填空题

公文除“会议纪要”以外,应当加盖印章。联合上报的公文,由主办单位加盖印章;联合下发的公文,()加盖印章。印章排列顺序应与发文单位顺序相一致。

A.由主办单位

B.发文单位都

C.发文单位都不需加盖印章

D.发文单位任何一个单位

题型:填空题

It helps us understand the world better if we know a little geography and have some maps at hand. But with maps in Chinese only, misunderstanding is possible in studying world events. Chinese names are long, hard to pronounce and without meaning to a foreigner. For the opening of the country maps are important and helpful and needed badly.

I wish maps various languages, such as those used in the United Nations, would come out and be sold in all bookstores open to Chinese.

小题1:The writer is mainly talking about ____.

A.geography

B.maps

C.Chinese names

D.the opening of the country小题2:Knowing a little geography and having some maps in Chinese only, a foreigner ____.

A.can study world events easily

B.can study world events without misunderstanding

C.can’t study world events without misunderstanding

D.will fell joy in studying world events小题3:What are the difficulties for a foreigner to use a map in Chinese?

A.A foreigner has nowhere to buy a map

B.All the bookstores only open to Chinese.

C.The names of Chinese people are long, hard to pronounce and without meaning.

D.The names of places on a map in Chinese are long, hard to pronounce and without meaning.小题4:In the United Nations people use maps in ____.

A.foreign languages only

B.Chinese only

C.various languages

D.English only小题5:According to the passage maps in foreign language are badly needed ____.

A.in a country open to other parts of the world

B.if a country is going to join the United Nations

C.when we are learning geography

D.if there are no maps in bookstores open to Chinese

题型:填空题

1995年拆除的中山纪念堂位于何处?

题型:填空题

属于高温型分散染料的是()

A、分散灰N

B、分散深蓝HGL

C、分散蓝SE-2R

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