The mechanical efficiency of an engine （） because losses occur in the form of friction. -题库考试答案搜索网

The mechanical efficiency of an engine （） because losses occur in the form of friction.

单选题

2022-08-11 00:28

A、is always less than 100%
B、is always more than 100%
C、is always equal to 90%
D、is always less than 90%

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正确答案

A

试题解析

标签：船舶动力装置海船船员考试

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