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【单选题】
变频器的中速运行频率需要设定变频器的哪个功能参数
A.
P.4
B.
P.5
C.
P.6
D.
P.7
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【单选题】“形散神聚”是( )构造的特点。
A.
诗歌
B.
散文
C.
小说
D.
戏剧
【单选题】After formation of replication fork
A.
Both the new strands are synthesized discontinuously
B.
One strand is synthesized continuously and the other discontinuously
C.
Both the new strands are synthesized continuously
D.
RNA primer is required only for the synthesis of one new strand
【单选题】散文构造的特点是
A.
矛盾冲突
B.
固定规范
C.
形散神聚
【单选题】已知某计算机CPU的外为133MH,其主板上倍频跳线在6的位置上,则该计算机的主频为
A.
800MH2
B.
700MHZ
C.
900MHZ
D.
600MHZ
【简答题】已知PⅢ CPU主频为1G,则该CPU时钟周期为()ns。
【判断题】形散神聚是散文构造的特点。
A.
正确
B.
错误
【单选题】In the process of meiosis,DNA replication of each chromosome occurs,form ing a structure consisting of two sister chromatids attached to a single centromere.What is this structure?
A.
A duplicated chromosome
B.
Two chromosomes
C.
A synapsed chromosome
D.
A crossover chromosome
【单选题】已知某计算机 CPU 的外频为 133MHz ,其主板上倍频跳线在 6 的位置上,则该计算机的主频为()
A.
800MHz
B.
700MHz
C.
900MHz
D.
600MHz
【判断题】间接贸易一定包含着转口贸易。()
A.
正确
B.
错误
【单选题】Which are features of nuclear division by mitosis? 1. forms cells of equal size to the parent cell 2. forms genetically identical cells 3. semi-conservative replication of DNA
A.
1 and 2 only
B.
2 and 3 only
C.
2 only
D.
1, 2 and 3
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