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【简答题】
将当前目录下的bin目录和hello、hello.c文件备份并压缩为binzxj.tar.gz文件的命令是()
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举一反三
【简答题】Engineers had a better choice of material, ______________ (当新发明被投入使用以后).
【单选题】A ) It looks unusual. B) It transforms. C) It uses better material. D) It is a new product.
A.
It looks unusual.
B.
It transforms.
C.
It uses better material.
D.
It is a new product.
【单选题】After synthetic ____, engineers had a better choice of material.
A.
created
B.
has created
C.
has been created
D.
had been created
【单选题】After synthetic ____, engineers had a better choice of material.
A.
created
B.
has created
C.
has been created
D.
had been created
【单选题】Mr. H never gets beyond corporal and material ________.
A.
verities
B.
value
C.
profit
D.
benefit
【单选题】If a better material______, the cost of the product would have been decreased.
A.
had been used
B.
had been using
C.
being used
D.
using
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