问题
单项选择题
吹灰器不能长期搁置不用，积灰、生锈、受潮等原因会使吹灰器（）。
A.动作受阻，失去功用
B.损坏，增加检修工作量
C.退出备用
D.停用，节省自用蒸汽用量
答案
参考答案：A
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吹灰器不能长期搁置不用，积灰、生锈、受潮等原因会使吹灰器（）。
A.动作受阻，失去功用
B.损坏，增加检修工作量
C.退出备用
D.停用，节省自用蒸汽用量
参考答案：A
| 下面有六段电视节目内容的解说词，请将其中序号填在相应的节目名称前。 | |
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