单项选择题

对于同一个数字，如“1”，共阳极和共阴极数码管的显示编码之间有什么关系？
A、按位与
B、按位或
C、按位异或
D、按位取反

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问答题
The film’s latest product, _____________ only six months ago, has already captured a significant share of the market. A、launching B、having launched C、launched D、to launch
未分类题
Who does the word 'Stakhanovites' refers to according to the passage?A.Those that are of Russian origin.B.Those Russian workers.C.Those exceedingly hardworking ones.D.Those socialists.
A.Those
B.
B.Those
C.
C.Those
D.
D.Those
E.
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