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【单选题】
用户编写了一个文本文件a.txt,想将该文件改名为txt.a,下列( )命令可以实现。A.
cd a.txt txt.a
B.
echo a.txt
C.
mv txt.a a.txt
D.
cat a.txt > txt.a
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【简答题】Calculating Rates of Return: You’re trying to choose between two different investments, both of which have up-front costs of $65,000. Investment G returns $125,000 in six years. Investment H returns $...
【简答题】Correct the mistakes in the following sentences. Being Sunday, I shall have a quiet day at home. 2. Entering the house, the door closed with a bang. walking through the park, the flowers made a lovely...
【简答题】酶分子的结构特点是具有()。
【单选题】--Where would you like to meet? --I the park because it is quiet and beautiful.
A.
discover
B.
value
C.
suggest
D.
mention
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