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>3RA19433L3RA19522A3RA19522E3RA19522F3RA19532A3RA19532B3RA19532M3RA19532N3RA19533D3RA19533P3RA19542A3RA19542C3RA19622A3RA19622E3RA19622F3RA19632A3RA19632B3RA19633D3RA19722A3RA19722E3RA19722F3RA19732A3RA19732B3RA19733D
SACE E3N 25 抽屉式 3P 6SE7041-8EK85-0HA0 品牌:HEIDENHAIN 型号:559682-33 (含电缆) A06B-6089-H105 A06B-6089-H106 A02B-0283-B801 A02B-0236-C205 A06B-6150-H045 A06B-6127-H209 A06B-6127-H208 A06B-6132-H002 A02B-0306-13822 A06B-6127-H106 3BHL001434P0002 IC200AL...
(Ⅱ)∵( \dfrac {1}{3p}+ \dfrac {1}{2q}+ \dfrac {1}{r})(3p+2q+r)\geqslant (1+1+1)^{2}=9, \dfrac {1}{3p}+ \dfrac {1}{2q}+ \dfrac {1}{r}=4 ∴3p+2q+r\geqslant \dfrac {9}{4},∴3p+2q+r的最小值为 \dfrac {9}{4}. (I)由题意,分类讨论,去掉绝...
∴.12=3I=3×2A=6A.P=UI,P2 36W ∴.U2= 二 =6V I2 6A(3)根据P=由题中条件分析,图乙电功率最大,图甲电功率最小,图甲中,R串=R1+R2=2R2+R2=3R2图乙中,RiR2 2R2R2 2 R并= 二 R2 R1+R2 2R2+R2 3P最大 R串 3R2 9 二二 最小 R并 23 R2 2答:(1)电压表的先后示数U1的比值为2:...