锅炉允许吹扫条件不包括（）
A.MFT未复归
B.送风机运行
C.磨煤机均停
D.排粉机均停
参考答案：C
Mr Brown was much disappointed to see the washing machine she had had_______went wrong. [ ]
A. it
B. it repaired
C. repaired
D. to be repaired
《鸡冠花》
