去分母得：x=m，
由分式方程无解，得到x+1=0，即x=-1，
代入整式方程得：m=-1．
故选A
He sat on his bed looking at his brother, _______ had his arms crossed and looked angry.
A．that
B．whom
C．who
D．which
京唐公司2250热轧加热炉采用长行程装钢机，它的重型箱形结构装钢臂长达22米行程可达8m，可满足4～6块钢坯空位，使加热炉具有一定的（）能力。
