钢轨探伤仪“轨型选择”改变时，则只改变探伤仪的报警范围。
参考答案：错
下列多项式中，能在实数范围内分解因式的是（ ）
A．x2+4
B．x2-2
C．x2-x+1
D．x2+x+1
_______ you feel exhausted after the long tiring journey, you may as well take a good rest at home. [ ]
A. So that
B. In that
C. Now that
D. In order that
