加热炉负压上升明显时应当（）吹灰操作。
A.加强
B.减弱
C.取消
D.无法判断
参考答案：A
梦遗主要责之于（）
A.劳伤心脾
B.湿热下注
C.心肾不交
D.肾气不固
E.肾阳虚衰
Nancy asked Smith to take tea with her. He ________, fearing to cause her inconvenience.
A．ignored
B．declined
C．resisted
D．cancelled
