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答案:
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1.已知A、S 1 <S 2 <S 3B、S 2 <S 1 <S 3C、S 2 <S 3 <S 1D、. S 3 <S 2 <S 1
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2.s(s 1)(s 2
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3.S 34)E(s)=S(S 1)(s 2)
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4.已知数列{aS n , a 1 =- 2 3 ,满足 S n 1 S n 2= a n (n≥2) ,计算S 1 ,S 2 ,S 3 ,S 4 ,并猜想S n 的表达式.
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5.1μS-5μS 40μS-60μS│2μS-5μS 50μS-60μS│1μS-3μS 40μS-50μS│1μS-5μS 40μS-50μS
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6.s=0;for m=1:10if 1==rem(m,2)s=s m;endenddisp(s);
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7.若int s=6;则表达式s%2 (s 1)%2的值是______。
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8.A.n = 1, l = 0 ,m = 0 , s = +1/2B.n = 2, l = 1, m = 0 , s = +1/2C.n = 3, l = 2 ,m = 1, s = +1/2D.n =
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9.s=s 1
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10.绘制设计零件的 s m — s a 极限应力简图时, 所必须的已知数据是 。