计算:(x+2)(x-1)=( );分解因式:x2-1=( )。
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A.U=vBl,流过固定电阻R的感应电流由b到d
B.U=vBl,流过固定电阻R的感应电流由d到b
C.U=vBl,流过固定电阻R的感应电流由b到d
D.U=vBl,流过固定电阻R的感应电流由d到b
The building was named Ford Hall________a man named James Ford.[ ]
A.in place of
B.in celebration of
C.in memory of
D.in favour of