Registered Cost Engineer – Installation and Metering, Multiple Choice Questions, 2021.12.24
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The characteristics of red copper include ( ). A. Mainly used for making electrical conductors. B. Mainly used for preparing alloys. C. Mainly used for making wear-resistant parts such as bearings. D. Mainly used for making corrosion-resistant and magnetically resistant parts. 【Answer】AB 【Explanation】Pure copper is purple-red in color and is often referred to as red copper; it is mainly used for making electrical conductors and for preparing alloys. Pure copper has low strength and is not suitable as a structural material.
Each question is worth 1.5 points; among the options for each question, 2 or more are correct in accordance with the requirements, and there is at least 1 incorrect option. Wrong choice: no points for this question; incomplete choice: 0.5 points for each selected option