下列反应不属于四种基本反应类型,,但属于氧化还原反应的是( ) A.Fe+CuS

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问题:

下列反应不属于四种基本反应类型,,但属于氧化还原反应的是(  )

A.Fe+CuSO4=Cu+FeSO4

B.AgNO3+NaCl=AgCl↓+NaNO3

C.3CO+Fe2O3

 高温 
.
 
2Fe+3CO2

D.MgCl2(熔融)

 通电 
.
 
Mg+Cl2

考点:氧化还原反应的本质和特征氧化还原反应的定义
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B Customs of Bulgaria: Marriage and Family保加利亚习俗:婚姻与家庭
The average age for women to marry is between 18 and 25.25 tend to (1) when somewhat older. A church wedding often (2) the legal civil ceremony, and a large reception, which often involves (3) music and dancing, is held in the evening. Wedding traditions include (4) money on the bride’s dress to represent future prosperity, the groom (5) the bride at her home, and the couple pulling on opposite (6) of a loaf of bread—whoever gets the largest piece will be (7) boss of the family. Honeymoons are a new tradition.
The principle (8) mutual support is valued in the Bulgarian family. The elderly are (9) cared for by their adult children. Unmarried adults live with their (10) and many newly married couples live with one set of parents (11) they are able to get housing of their own. Most families (12) urban areas live in apartments, which are in short
supply, while (13) in rural areas usually have their own houses. Many village houses (14) owned by families who live in urban areas, who use them_ (15) summer and weekend retreats, or for retired parents.
Most families in (16) areas do not have more than two children, while families in (17) areas tend to be larger. Grandparents play an important role in (18) care, particularly in urban areas, where most women work outside the (19) . Men of the younger generation have begun to help with household (20) , once considered only women’s responsibility.

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如图所示是新街换装的新路灯,左右灯箱内各有一盏节能灯,两灯的明暗独立控制。以下模拟电路与之相符的是

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软融带的形状与炉内()相适应,同时又与煤气中的CO2相对应。

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中圈的直径是3.60米。篮圈内径应为45厘米。篮圈上沿离地面的高度为()米。

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邻二甲苯的爆炸上限为()g/m3空气。

A.150

B.100

C.300

D.44

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