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The primary purpose of the passage is to ______. It can be inferred from the passage that, in the course of a heating season, t
The primary purpose of the passage is to ______. It can be inferred from the passage that, in the course of a heating season, t
admin
2009-06-15
91
问题
The primary purpose of the passage is to ______.
It can be inferred from the passage that, in the course of a heating season, the heating capacity of a heat pump is greatest when ______.
选项
A、heating is least essential
B、electricity rates are lowest
C、its compressor runs the fastest
D、outdoor temperatures hold steady
答案
A
解析
由文章第五段可知,要使热力泵达到最大供热能力的条件是:外界空气温度达到最高点。而外界气温越高,人们越不需要热力泵供热,因此A项是正确答案。
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本试题收录于:
职称英语理工类A级题库职称英语分类
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