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【单选题】
有关转录的延长的描述错误的是:A.
由核心酶发挥作用
B.
碱基配对的A=T，G=C，T=A
C.
形成转录空泡
D.
转录过程形成DNA-RNA的杂化双链
E.
RNA链可伸出转录空泡外。
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反馈参考答案：
举一反三
【单选题】At 4pm, the manager of a hotel notices that 30% rooms for that night are still vacant. She offers a 30% discount for that night only. The manager is most likely trying to overcome issues associated wi...
A.
inseparability
B.
heterogeneity
C.
perishability
D.
intangibility
【简答题】The hotel's service is so good that Tom feels at home. The hotel's good serce____________Tom feel at home.
【单选题】局域网中使用的传输介质有双绞线、同轴电缆和光纤等。10BASE-T采用3类UTP，规定从收发器到有源集线器的距离不超过______米。
A.
100
B.
185
C.
300
D.
1000
【简答题】The hotel's service is so good that Tom feels at home . The hotel's good service ________Tom feel at home .
【单选题】The following are all included in the hotel's package EXCEPT the service of______.
A.
a good wine
B.
a bunch of flowers
C.
a special dinner
D.
a free concert
【单选题】局域网中使用的传输介质有双绞线、同轴电缆和光纤等, 10Base-T 采用 3 类 UTP 规 定从收发器到集线器的距离不超过米( )。
A.
100
B.
185
C.
500
D.
1000
【单选题】The following are all included in the hotel's package except the service of ______.
A.
a good wine
B.
a bunch of flowers
C.
a special dinner
D.
a free concert
【单选题】局域网中使用的传输介质有双绞线、同轴电缆和光纤等。10BASE-T采用3类UTP，规定从收发器到有源集线器的距离不超过( )m。
A.
100
B.
185
C.
300
D.
1000
【简答题】世界上第一只克隆羊多莉是根据哪个身份的人来命名的?
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