(6分)用化学用语表示: (1)2个钠离子________。 (2)3个氢原子_

题型:填空题

问题:

(6分)用化学用语表示:

(1)2个钠离子________。

(2)3个氢原子________。

(3)煤燃烧形成硫酸型酸雨的气体________。

(4)香烟烟气中能使血红蛋白降低输氧能力的气体________。

(5)氯气(Cl2)能与水发生如下反应:Cl2+H2O===R+HClO。写出R的化学式________;在另一种生成物中氯元素的化合价________。

考点:化学反应方程式的书写化学图标化学反应方程式的配平化学反应方程式的意义
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Nineteenth-century art critics judged art by the realism of its method of representation. It was assumed that the realistic method developed from primitive beginnings to the perfection of formal realism. It is one of the permanent gains of the aesthetic revolution of the twentieth century that we are rid of this type of aesthetics.
It can be inferred from the passage above that the artistic revolution of the twentieth century had which of the following effects

A.It deemphasized realistic representation as an evaluative consideration for judging works of art.

B.It permitted modern critics to appreciate the simplicity of primitive art.

C.It repudiated the realistic representation found in the art of the past.

D.It reinforced traditional ways of looking at and judging great art.

E.(E) It allowed art critics to understand the evolution and nature of art.

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五倍子主含()

A.没食子酸

B.五倍子鞣质

C.脂肪

D.树脂

E.蜡质

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硫喷妥钠的临床应用()

A.与琥珀胆碱配合行气管插管

B.短小手术麻醉

C.小儿基础麻醉

D.抗惊厥或痉挛

E.脑外科手术麻醉

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为了保证倒闸操作的正确性,值班调度员应对大型操作应拟写操作票。

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根据健全家庭的概念,感恩之心产生于()。

A.社会之优

B.环境之好

C.亲情之爱

D.财富之多

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