正确答案: A
变形与开裂
题目:铁梨木轴承产生()时应予以部分或全部换新。
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学习资料的答案和解析:
[单选题]影响发动机加速时问长短的因素是它的()。I.运行部件的质量惯性;Ⅱ.受热部件的热惯性
Ⅰ+Ⅱ
[单选题]某产品在1万h内工作的可靠度R(t)=0.95,说明该产品()。Ⅰ.5%的产品可保持不低于1万h的工作能力;Ⅱ.95%的产品可保持不低于1万h的工作能力
仅Ⅱ对
[单选题]轴带发电机和柴油发电机相比具有的优点是()。Ⅰ.油耗低;Ⅱ.维护费少;Ⅲ.机舱噪声低
Ⅰ+Ⅱ+Ⅲ
[单选题]Sediment collects in a tubular purifier ().
on sides of bowl
[单选题]There is an injection pump for each cylinder, which is usually operated once every cycle by () on the camshaft.
a cam
[单选题]Proper atomization of fuel in diesel engine combustion chambers will ().
improve combustion
[单选题]What is an advantage of a steam turbine over a diesel for the main propulsion?()
Less weight per unit of horsepower