正确答案: B
高/减少
题目:在早期故障内故障率比较(),但它随时间的推移而()。
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学习资料的答案和解析:
[单选题]增压器转子转动时产生的离心力是()。
空间汇交力系
[单选题]当铁梨木轴承的轴承间隙超过标准,而铁梨木板条的厚度低于极限值时应采用()修理。
更换艉轴铜套
[单选题]In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?()
Tie rod
[单选题]Temperature control valves installed in the jacket cooling water system of a diesel engine modulates the rate of water flow through the ().
heat exchanger