The existence of reactions which are reversible on slight alteration of conditions at once invalidates the principle, for if the action proceeding in one direction evolves heat, it must absorb heat when proceeding in the reverse direction. [Please select]
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A tool to hold a drill, having a reversible ratchet wheel. [Please select]
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"I've got to investigate," puffed the perspiring corporal; "something must be wrong with the reversible propeller." [Please select]
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CHAPTER XVI LOST IN THE STORM "The trouble's in the reversible propeller." [Please select]
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232 is the non-reversible screen hinge and, as its name implies, will only fold in one direction. [Please select]
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The double reversible hinge will not fulfil these conditions, and the following method is therefore adopted. [Please select]
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The owls have a reversible outer toe, and perhaps the woodpeckers did also before it became permanently reversed. [Please select]
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