正确答案: A
Both;and
题目:() fuel oils () lubricating oils require treatment before passing to the engine.
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学习资料的答案和解析:
[单选题]气缸盖是柴油机的()和燃烧室的组成部分。
固定件
[单选题]局部螺距等于()(ΔL为螺距规量杆的升程α为螺距规水平杆转过的角度)。
360•ΔL/α
[单选题]Compressed air is used on board ship ().
All the above are true
[单选题]Diesel engines obtain combustion air through turbo chargers,blowers,or().
natural aspiration