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【单选题】
Which of the following startling facts or statistics is not appropriate in this introduction to the thesis “cities have a dark side”?Cities have a dark side. Cities take up just ①three percent of the world's surface area, but they account for more than ②75 percent of our energy consumption, and they emit ③80 percent of our greenhouse gases. Nearly ④92 percent of the inventions are made in cities.A.
①
B.
②
C.
③
D.
④
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举一反三
【简答题】辽宁省2017年定额中每层墙体砌筑高度超过( )m时,其超过部分工程量的定额人工乘以系数1.3。
【多选题】Which of the following sequences are belonged to promoter ( )
A.
TATA box
B.
TTCCT sequence
C.
CAAT box
D.
GC box
E.
AAUAAA
【单选题】Which sequences flank the P element of the Drosophila? _________
A.
Repeated
B.
Interstitial
C.
Inverted repeats
D.
Random
E.
ew Answer
【多选题】Which two statements about sequences are true? （）
A.
You use a NEXTVAL pseudo column to look at the next possible value that would be generated from a sequence, without actually retrieving the value.
B.
You use a CURRVAL pseudo column to look at the current value just generated from a sequence, without affecting the further values to be generated from the sequence.
C.
You use a NEXTVAL pseudo column to obtain the next possible value from a sequence by actually retrieving the value from the sequence.
D.
You use a CURRVAL pseudo column to generate a value from a sequence that would be used for a specified database column.
E.
If a sequence starting from a value 100 and incremented by 1 is used by more then one application, then all of these applications could have a value of 105 assigned to their column whose value is being generated by the sequence.
F.
You use REUSE clause when creating a sequence to restart the sequence once it generates the maximum value defined for the sequence.
【单选题】Which of the following is not in connection with DSC calling sequences?
A.
ACK.BQ
B.
ACK.RQ
C.
ARQ
D.
EOS
【单选题】In some bacterial and many eukaryotic genes, coding sequences are interrupted at intervals by regions of noncoding sequences which are called ______.
A.
enhancers
B.
exons
C.
introns
D.
promoters
【单选题】Which of the following sequences is right for the writing stages?
A.
developing ideas— working out the order(oragnizing ideas) —drafting— editing— proofreading—— re-drafting
B.
working out the order(oragnizing ideas)—developing ideas—drafting— editing— proofreading—— re-drafting
C.
working out the order(oragnizing ideas)—developing ideas—drafting— re-drafting—editing— proofreading—— re-drafting
D.
developing ideas— working out the order(oragnizing ideas)——proofreading —drafting— editing— re-drafting
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