正确答案: D
Ⅰ+Ⅱ+Ⅲ
题目:现代柴油机为使与其匹配的废气锅炉被设计得更加高效,应包括()。Ⅰ.利用大的受热面;Ⅱ.锅炉设计为扩展管表面;Ⅲ.燃气流速低
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学习资料的答案和解析:
[单选题]During (), the starting air valves should be closed to prevent the engine from turning.
overhaul
[单选题]With () unit the timing of fuel injection of an engine can be regulated automatically.
VIT