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答案:
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1.B S. S SCS
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2.R(s)E(s)KC(s)ss 图
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3.ss addo ' S
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4.G(S): S → SS (S) () B. G(S): S → iSeS iS i C. G(S): S → SaS SbS cSd eS f D.
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5.G[S]:S®SS | ( S ) | ( ) B. G[S]:S®iSeS | iS | i C. G[S]:S®SaS | SbS | cSd | eS | fD.
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6."Wendy's" began to McDonald's.
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7.以下程序的输出结果是:ss = list(set("jzzszyj")) ss.sort()print(ss) A['z', 'j', 's', 'y'] B['j', 's', 'y', 'z']C[
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8.strcat(ss, 6789");printf( %s\n',ss)A、ABc6789B、ABc67C、12345ABc6D、ABc456789
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9.Из точки S S опущен перпендикуляр S B SB к плоскости прямоугольного треугольника A B C ABC.
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10.Assume Countries A, B, and C produce goods that are substitutes of each other and that these countries