首页/ 题库 / [单选题]DNA拓扑异构酶的作用是 ( )的答案
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boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

OR指令的作用是:(  )  
 OR指令的作用是:( )
OR指令的作用是:( )
OR指令的作用是:(  )
原核生物复制过程中有多种酶和蛋白因子参与,它们是①DNA连接酶②引物酶③解螺旋酶④拓扑异构酶⑤DNA聚合酶,⑥SSB。其参加的顺序应是( )
拓扑异构酶I切断的DNA是( )
DNA拓扑异构酶的作用是 ( )
DNA拓扑异构酶 I 切断DNA 的( )条链。
biomembrane,or biological membrane (生物膜)
作用于DNA化学结构的药物()
影响核酸合成的药物()
影响核酸转录的药物()
拓扑异构酶抑制剂()
能干扰DNA拓扑异构酶Ⅰ的活性,从而抑制DNA合成的药物是()
作用于拓扑异构酶I的抗肿瘤药物()
拓扑异构酶通过在DNA上形成缺口()超螺旋结构。
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
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