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【单选题】
在DES加密算法中，密钥长度和被加密的分组长度分别是（）A.
56位和64位
B.
56位和56位
C.
64位和64位
D.
64位和56位
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皮皮学刷刷变学霸
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【单选题】Mary ______ her shoulders when I asked her what we should do.
A.
tapped
B.
shrugged
C.
threw
D.
shook
【简答题】在铁碳相图中,ECF线是共晶线,其温度为____。
【单选题】Mary is currently buying apples and oranges such that the last unit of apples has 30 units of utility and the last unit of oranges has 40 units of utility. She has allocated her entire budget. If the ...
A.
buy more apples and fewer oranges
B.
buy fewer apples and fewer oranges
C.
buy more oranges and fewer apples
D.
continue to buy the same amounts of both goods
E.
None of the above answers is correct.
【单选题】Thai is the only way we can imagine _________the overuse of water in students' bathrooms.
A.
reducing
B.
to reduce
C.
reduced
D.
reduce
【简答题】请简述什么是车辆识别代码及其作用。
【简答题】如何编制项目成本预算?
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