The safety valves are mounted in pairs to （） the boiler against overpressure. -题库考试答案搜索网

The safety valves are mounted in pairs to （） the boiler against overpressure.

单选题

2022-01-03 19:59

A、use
B、release
C、protect
D、effect

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正确答案

C

试题解析

标签：船舶辅助机械

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