[单选题]使用含有()的燃油添加剂,可使烟灰失去粘性,导致烟灰沉积趋势的减少。Ⅰ.氧化铜;Ⅱ.氧化铁
正确答案 :B
仅Ⅱ对
[单选题]水润滑式艉轴工作轴颈包覆(),非工作轴颈包覆()。
正确答案 :D
铜套/玻璃钢
[单选题]水润滑式艉轴的()包覆铜套,以防止腐蚀。
正确答案 :A
工作轴颈
[单选题]新制艉轴铜套的厚度应为()。
正确答案 :C
0.03d+7.5mm
[单选题]航行时,水润滑艉轴承填料密封装置应将压盖螺栓(),停航时将压盖螺栓()。
正确答案 :B
旋松/上紧
[单选题]After fitting back in place the gear wheels, dont forget () them.
正确答案 :A
to grease
[单选题]Increased air () will raise scavenge efficiency and allow a greater mass of air to be compressed; more fuel may now be burned giving an increased power.
正确答案 :B
density
[单选题]Main bearings are required to support the crankshaft at each ().
正确答案 :D
journal
[单选题]The high pressure in fuel injection system of the diesel engine is produced by the ().
正确答案 :A
injector pump
[单选题]For Vee-form engines, () is shaped to given two slopping surface on which () are placed at the correct relative angle to each other.
正确答案 :C
the top of the column;the cylinder blocks
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