They are very helpful in deciding the fashion a company should and should not manufacture.(英译汉)
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Manufacturers have to design, produce and ship the right product to the stores at the right time. (英译汉)
利用热电偶进行测温时,在回路中引入连接导线和仪表,只要热电偶两端温度与原来的相同,则电动势不收到影响。
A. 对
B. 错