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【简答题】
采用顺序存储方式存储串，编写一个函数将串S1中的第i个字符到第j个字符之间的字符(不包括第i个和第j个字符)用S2串替换，函数名为substitute(s1，i，j，s2)。例如：substitute(abcd，1，3，xyz)返回axyzcd。
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【单选题】The percentage of purchases on credit cards this year drops by______since 2007.
A.
31%
B.
42%
C.
45%
D.
56%
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【单选题】Other commitments remain sparse despite the plan______since 2007.
A.
floated
B.
having been floated
C.
having floated
D.
was floated
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【单选题】“Rubber Duck”,________ by Dutch artist Florentijn Hofman，has visited many cities since 2007．
A.
being created
B.
creating
C.
created
D.
having created
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【单选题】锆盐-枸橼酸反应生成的黄色物加枸橼酸后不褪色的是( )
A.
3-OH黄酮类
B.
5-OH黄酮类
C.
7-OH黄酮类
D.
4'-OH黄酮类
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【单选题】-_____have you been in Beijing? -Since 2007.
A.
Whch
B.
How long
C.
How far
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【单选题】They studied what ______ since 2007 and found Australian electricity prices were among the  highest in the developed world.
A.
has happened
B.
happened
C.
had happened
D.
has been happening
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【单选题】Tick bites（蜱虫叮咬）are reported _______ in 12 provinces and claimed 31 lives since 2007.
A.
to break out
B.
to have broken out
C.
to be broken out
D.
to have been broken out
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【单选题】The word 'foolish' is too mild to describe your behavior, I would prefer the word ______.
A.
ideological
B.
idyllic
C.
idiotic
D.
idiomatic
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【单选题】The world has been shaken by a huge financial crisis since 2007; thanks to each country’s powerful policies, the international trade is improving _________ day by day.
A.
in short
B.
in all
C.
in turn
D.
ingeneral
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【简答题】焊前准备的几点要素,如装配间隙、钝边大小、反变形大小的确定。
查看完整题目与答案
相关题目：
【单选题】The percentage of purchases on credit cards this year drops by______since 2007.
A.
31%
B.
42%
C.
45%
D.
56%
查看完整题目与答案
【单选题】Other commitments remain sparse despite the plan______since 2007.
A.
floated
B.
having been floated
C.
having floated
D.
was floated
查看完整题目与答案
【单选题】“Rubber Duck”,________ by Dutch artist Florentijn Hofman，has visited many cities since 2007．
A.
being created
B.
creating
C.
created
D.
having created
查看完整题目与答案
【单选题】锆盐-枸橼酸反应生成的黄色物加枸橼酸后不褪色的是( )
A.
3-OH黄酮类
B.
5-OH黄酮类
C.
7-OH黄酮类
D.
4'-OH黄酮类
查看完整题目与答案
【单选题】-_____have you been in Beijing? -Since 2007.
A.
Whch
B.
How long
C.
How far
查看完整题目与答案
【单选题】They studied what ______ since 2007 and found Australian electricity prices were among the  highest in the developed world.
A.
has happened
B.
happened
C.
had happened
D.
has been happening
查看完整题目与答案
【单选题】Tick bites（蜱虫叮咬）are reported _______ in 12 provinces and claimed 31 lives since 2007.
A.
to break out
B.
to have broken out
C.
to be broken out
D.
to have been broken out
查看完整题目与答案
【单选题】The word 'foolish' is too mild to describe your behavior, I would prefer the word ______.
A.
ideological
B.
idyllic
C.
idiotic
D.
idiomatic
查看完整题目与答案
【单选题】The world has been shaken by a huge financial crisis since 2007; thanks to each country’s powerful policies, the international trade is improving _________ day by day.
A.
in short
B.
in all
C.
in turn
D.
ingeneral
查看完整题目与答案
【简答题】焊前准备的几点要素,如装配间隙、钝边大小、反变形大小的确定。
查看完整题目与答案