单项选择题
省煤器的磨损原因有()。
A、烟气流速过高,含灰量大,飞灰磨损
B、进水温度和排烟温度低
C、给水除氧不良
D、省煤器管膨胀不自由
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单项选择题
Byron's ____ is regarded as the great poem of the Romantic Age.
A、 Childe Harold's Pilgrimage
B、 Hours of Idleness
C、 Lara
D、 Don Juan
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单项选择题
The best works of William Hazlitt is ____.
A、 The Spirit of the Age
B、 Table Talk
C、 The Characters of Shakespeare's Plays
D、 On the English Poets
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