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【单选题】
关于切除修复机制,说法错误的是( )A.
碱基切除修复中，N-糖苷酶可以脱碱基型AP位点
B.
碱基切除修复主要针对DNA单链断裂和小的碱基改变及氧化性损伤
C.
核苷酸切除修复系统能识别损伤的碱基，从而将损伤位点切除。
D.
大肠杆菌的核苷酸切除修复系统设计uvrA/B/C/D四种基因的表达
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The company needs to improve its communication system to show that it ______ all its staff.
A.
consults
B.
values
C.
educates
D.
attaches
【单选题】The company needs to improve its _________ among young people.
A.
image
B.
imagine
C.
imagination
【单选题】As a network administrator， can you tell me what the root guard feature provides in a bridgednetwork？（）
A.
It ensures that BPDUs sent by the root bridge are forwarded in a timely manner
B.
It enforces the root bridge placement in the network
C.
It ensures that all ports receiving BPDUs from the root bridge are in the forwarding state.
D.
It ensures that the bridge is elected as root bridge in the network.
【简答题】（）是按照统计、会计和业务三种核算的要求，通过一定的表格形式，对企业生产经营活动的情况所做的最初数字和文字记载。
【简答题】SIP协议中的事务以Via头域中的( )作为标识
【简答题】cephal/o cerebr/o cis/o crin/o cyst/o
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