下列哪一项不属于拓扑异构酶的作用A.能松弛DNA超螺旋 B.不具有连接酶的作用 C.

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问题:

下列哪一项不属于拓扑异构酶的作用

A.能松弛DNA超螺旋

B.不具有连接酶的作用

C.能同时断开DNA双股链

D.需要高能辅助因子参与

E.将DNA分子引入超螺旋结构

考点:口腔执业助理医师口腔执业助理医师
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商业性非公路标志标牌在招商期间必须以路政管理政策法规宣传标语进行覆盖;招商内容可以与公路宣传标语同时发布,但只能位于公路宣传标语的下方,所占面积不得超过该标志牌的版面面积的()。

A、1/3

B、1/4

C、1/2

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岩巷放炮时直巷撤人距离是100米,煤巷是50米。(√)50、矿井火灾可分为内因火灾和外因火灾。()

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男性,5岁。患腰椎结核1个月,下列试验可能阳性的是()

A.MCMurray试验

B.Thomas征

C.Gaenslen征

D.拾物试验

E.Dugas征

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木头电线杆在埋在地下之前会把埋入地下面的部分木头烤焦,原因是                                                    

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What’s in a surname You may ask. A new website project has been released, that helps you (1) . Have you ever wondered why your ancestors gathered where they did, or where others with your surname live now A research project (2) in Britain answers these questions. And another study has found the surnames are (3) .
"Smith", for example, remains the most common surname in Britain. Used by (4) people, it has exactly the same concentration it always did in Lerwick, in the Scottish Shetland Islands. "Jones" is (5) , and is the most common among hill farmers (6) .
The data used for this project comes partly (7) . A number of other files are held by Expairing, which is probably Britain’s (8) .
There’ re some of us who are fairly predictable. "Campbell", for example, as you might expect, is somewhat concentrated (9) , and it appears really bizarre to be found anywhere else.
Well, with 25,000 names as (10) , what you can do is put them in general categories, if, for example, you look at (11) . Like the name Webber, you might find it is much more common in the Midlands than (12) . If you go to Wales, most people get their names (13) . And in Yorkshire for example, a lot of people have names (14) that they originally lived in or at least their ancestors did.
Well, we only have 25, 000 names on this website, but there’re (15) now found in Britain and they’ re particularly interesting, for (16) . Most British names are fairly common. And about what we can now do as such is look for (17) from different parts of the world and different faiths, (18) . And what there is in names is actually extremely useful, for researchers in (19) may find a lot about (20) now living in this country.

What’s in a surname You may ask. A new website project has been released, that helps you (1) . Have you ever wondered why your ancestors gathered where they did, or where others with your surname live now A research project (2) in Britain answers these questions. And another study has found the surnames are (3) .
"Smith", for example, remains the most common surname in Britain. Used by (4) people, it has exactly the same concentration it always did in Lerwick, in the Scottish Shetland Islands. "Jones" is (5) , and is the most common among hill farmers (6) .
The data used for this project comes partly (7) . A number of other files are held by Expairing, which is probably Britain’s (8) .
There’ re some of us who are fairly predictable. "Campbell", for example, as you might expect, is somewhat concentrated (9) , and it appears really bizarre to be found anywhere else.
Well, with 25,000 names as (10) , what you can do is put them in general categories, if, for example, you look at (11) . Like the name Webber, you might find it is much more common in the Midlands than (12) . If you go to Wales, most people get their names (13) . And in Yorkshire for example, a lot of people have names (14) that they originally lived in or at least their ancestors did.
Well, we only have 25, 000 names on this website, but there’re (15) now found in Britain and they’ re particularly interesting, for (16) . Most British names are fairly common. And about what we can now do as such is look for (17) from different parts of the world and different faiths, (18) . And what there is in names is actually extremely useful, for researchers in (19) may find a lot about (20) now living in this country.

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