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問題

解法ステップ

1. Understand the question

   what did james watts add to the steam engine to make it more profitable and efficient?
   evaporators
   radiators
   condensors
   rewatch\tsubmit

2. Brief Explanations

   James Watt (note: the name is often spelled "Watt" not "Watts" here) improved the steam engine by adding a separate condenser. This innovation made the steam engine more efficient by reducing heat loss, as the condenser cooled the steam back into water without having to reheat the main cylinder, thus making the engine more profitable to operate. Evaporators are not associated with Watt's steam engine improvements, and radiators in the context of steam engines as we know them (like in cars) were not his key addition.

3. Final answer

   condensors (the option with "condensors" - note: sometimes spelled as "condensers" but the option here has "condensors" which is likely a typo for "condensers")

答え

Question Analysis

OCR Text

what did james watts add to the steam engine to make it more profitable and efficient?
evaporators
radiators
condensors
rewatch\tsubmit

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