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若关于x,y的多项式(8-2m)x2+(-n+3)x-5y+1的值与字母x取值无关. (1)求m、n的值; (2)若点D是线段AB的中点,点C在直线AB上,点E是线段BC的中点,且AB=mcm,BC=ncm,那么线段DE的长度是多少?(请画出图形并写出推理计算的过程) 试题答案
36 MCM Series Lightweight type Body of MCM Series and sensor rail combination table Table 2-4 Nom inal size Body length (mm) L2 100 MCM 02 150 200 115 190 M CM 03 240 290 340 180 230 280 330 380 MCM 05 430 530 630 730 Reference number MCM02005H01K MCM02005P01K MCM02005H02K ...
The protein was eluted with 50 mM sodium phosphate pH 8, 250 mM imidazole, 300 mM NaCl, with 1x CIP without EDTA and desalted with a PD10 column (GE Healthcare) pre-equilibrated with equilibration buffer (50 mM sodium phosphate pH 8, 200 mM NaCl). The elution was ...
8 250A 250 A AMP BREAKER PANELBOARD 208Y/120V VOLT 3PH 4W Siemens CCD Kamera Sicolor C810 2GF1180-8CA+super Optik Siemens CBD Devicenet Communication Board w/Term - 6SX7010-0FK00 SIEMENS CB451-A45-A14-2 PC BOARD CB451-A45-A14 Siemens CB451-A13-A51-2 Card SMP-E354-A1 SIEMENS...
用全硅MCM 4 1共浸渍法担载Co Mo制备的催化剂 ,其金属担载量w(MoO3 ) =2 0 %。考察了该催化剂对二苯并噻吩 (DBT)、 4 甲基二苯并噻吩 (4 MDBT)、 4 ,6 二甲基二苯并噻吩 (4,6 DMDBT)和高硫直馏柴油加氢脱硫反应的活性 ,并与日本某深度加氢脱硫催化剂 (DHDS)作了比较。结果表明 ,所研制的...
10 180 161885 10 735 150 10 AT5-975 10-001 10 557 10-40552G10 10-40553G10 10-424 22 015 10-424 41 034 10-457 01 003 10-5000W003 10-959 04 041 10-959 04 103 10-D-EW-NC-G3/4 10-F现货 10.0400.001 10.101260.001 10.23331 10.7220.000 100 01 0513 0700 100-051-101 100-...
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Díez‑Rodríguez1, María L. Cerrada1,* , and Ernesto Pérez1 1 Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain 2 Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de ...
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