正确答案: C
价格贵/不耐磨
题目:铁梨木艉轴承的缺点是()和()等。
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学习资料的答案和解析:
[单选题]船用增压器轴承多采用滚动轴承,因其具有拆装方便,起动性能好、效率高、摩擦系数小等优点,但其缺点是()。
使用寿命有限制
[单选题]Which of the following may cause that an engine doesnt run on starting air?()
A and B
[单选题]The water in an auxiliary boiler should be tested for chloride content to determine ().
salt contamination
[单选题]Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or ().
feeler gauge
[单选题]Combustion knock occurring in a diesel engine can be caused by ().
prolonged ignition lag