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2016奉贤初三化学二模

1-ABABD CDCAAC DB 16-20CABCB 21-25 DCBDC 26-30CBCDC 31-35 ADDBB 36-40DEFAC 41-45 ADBBC 46-50ACADB 51-55 BCCDA 56-60DDCBB 61. it 62.of 63. is 64.overlooking 65. became 66.which 67. the 68.geographical 69. equipped 70. that 短文...

你可以把题目发上来,会有很多人解答,很少有人会花功夫再去查找题目的。

1-ABABD CDCAAC DB 16-20CABCB 21-25 DCBDC 26-30CBCDC 31-35 ADDBB 36-40DEFAC 41-45 ADBBC 46-50ACADB 51-55 BCCDA 56-60DDCBB 61. it 62.of 63. is 64.overlooking 65. became 66.which 67. the 68.geographical 69. equipped 70. that 短文...

海盗小说,

网上有的

(1)∵πx2+πxy=2π∴y=2?x2x(4分)∵x<y∴x<2?x2x,∴0<x<1(6分)(2)依题意,作圆锥的高SO,∠SAO是母线与底面所成的线面角,(7分)设圆锥高h,∵cosπ3=xy=12,y=2x∴h=3x∴x=23,h=2(9分)V=13πx2h=33πx3≈0.99m3(11分)答:所制作的...

1. CABC A B CDCDACDB D B CBA 2. (1)What has happened: We have just moved (2);This has not been easy (.3); I have…put (4); I haveever seen (5) What hasbeen happening: I have been working (6);I havebeen trying (7) haveexplaine...

(1)如果H处放少量锌粒,G处盛稀盐酸,当稀盐酸和锌粒反应时生成了氢气,在加热的条件下,氧化铜被氢气还原生成了铜,所以,则加热处的现象为:黑变红;反应的化学方程式为CuO+H2 △ . Cu+H2O;为了实验安全,在加热前应采取的措施是通一会儿氢...

结合图形,发现:第(1)个图形的表面积是1×6=6,第(2)个图形的表面积是(1+2)×6=18,第(3)图形的表面积是(1+2+3)×6=36,第(4)图形的表面积是(1+2+3+4)×6=60,…故第n个图形的表面积是(1+2+3+…+n)×6=3n(n+1)故答案为:3n(n+1)

①V水=m水ρ水=2kg1.0×103kg/m3=2×10-3m3答:水的体积为2×10-3m3.②A容器对水平面的压力:FA=GA总=(m水+m容)g=(2kg+0.5kg)×9.8N/kg=24.5N,A容器对水平面的压强:PA=FASA=24.5N0.01m2=2450Pa.答:A容器对桌面的压强为2450Pa.③h水=V水S=2×103...

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