低料线可能造成（）。
A、炉缸大凉
B、炉况失常
C、高炉结瘤
D、烧坏炉顶设备
参考答案：A, B, C, D
It was from only a few supplies that she had bought in the village ______the hostess cooked such a nice dinner
A．where
B．that
C．when
D．which.
“道而弗牵，强而弗抑，开而弗达”出自( )。
A．《论语》
B．《学记》
C．《大学》
D．《孟子》
