题目内容
_______ a half hour at lunchtime, there were no breaks in the day to relieve the boring work.
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After I made observations for a week, Mr. Hobbs asked me ______ an oral report of my findings.
If the management provides pleasant background music and _______ the dull setting, the factory will be much more _______.
Mr. Hobbs would talk over my suggestions with his brother, ______ co-owner and ______ manager of the factory.
A/D转换器中,转换速度最高的为（）。
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