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【多选题】
以下是有关真核生物的启动子的描述,正确的是:A.
真核生物的启动子在-25-35区含有TATA序列
B.
在-70-80区含有CCAAT序列
C.
CAAT区和GC区主要控制转录的起始，基本不参与起始位点的确定
D.
每个基因的启动子都含有CAAT区、GC区和TATA区
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【单选题】对于不同的网络操作系统提供功能的描述，下列哪种说法是错误的?()
A.
Windows2000server有良好的文件和打印能力，有优秀的目录服务
B.
Windows2000server有良好的文件和打印能力，没有优秀的目录服务
C.
NetWare有良好的文件和打印能力，有优秀的目录服务
D.
NetWare有良好的文件和打印能力，没有优秀的目录服务
【单选题】If you travel or live in the United Stales or Canada you will find that most people are happy to give directions (指路). Asking for directions is a good way to practice English. Most people are very fri...
A.
True.
B.
False.
【简答题】现代pharmaceutics的分支学科包括_、_、_、_、_和_。
【简答题】按照图纸要求完成下图零件的主视图所示表面的轮廓加工,带入刀具半径补偿功能进行粗精加工并去除多余余量,余量的去除可以采用多种方法,也可以手摇加工。
【简答题】We all know talented people who never seem to reach their potential. These people often have great early success, then seem to fade into averages. Those who lack persistence start out with the best in...
【单选题】Having ________ fair attitude towards people with different ideas is ________ indication that one has been well educated
A.
a, an
B.
the, the
C.
/, the
D.
a, /
【简答题】In many English homes people eat four meals a day: breakfast, lunch, tea and dinner(主餐). People have breakfast at any time from seven to nine in the morning. They eat porridge(粥), eggs or bread. Engli...
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