二级转化器的温度通常较一级要低（）左右。
A.50℃
B.100℃
C.150℃
D.200℃
参考答案：B
The police asked the little boy _____. [ ]
A. where did he live
B. where does he live
C. where he lived
D. where he did live
岔线是指在区间或站内接轨，通向路内外单位的专用线路。（）（C、3、Y）[05-00-01-02][020205]
