【名词&注释】
增压器(turbocharger)、气缸套(cylinder liner)、便于管理(convenient for managing)、表面耐磨性(surface wearability)、四冲程柴油机(four-stroke diesel engine)
[单选题]短轴系具有()的特点,所以目前造船趋势大都采用艉机舱或近尾机舱。Ⅰ.结构简单;Ⅱ.便于管理;Ⅲ.便于船舱布置;Ⅳ.节省造船费用;Ⅴ.中间轴数量少。
A. Ⅱ+Ⅲ+Ⅳ
B. Ⅰ+Ⅱ
C. Ⅰ+Ⅱ+Ⅴ
D. Ⅰ+Ⅲ
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学习资料:
[单选题]强化气缸套内圆表面的方法主要有()等工艺,使表面耐磨性、抗咬合性提高来防止拉缸事故。Ⅰ.松孔镀铬;Ⅱ.镀铁;Ⅲ.离子氮化;Ⅳ.硬质镀铬;Ⅴ.喷钼。
A. Ⅰ+Ⅱ+Ⅴ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅳ+Ⅴ
D. Ⅰ+Ⅲ+Ⅴ
[单选题]四冲程柴油机(four-stroke diesel engine)停增压器运转,相当于非增压柴油机,但此时工作的主要问题是()。
A. 气阀重叠角较小,排气不畅
B. 气阀重叠角较大,排气不畅
C. 气阀重叠角较小,排气倒流
D. 气阀重叠角较大,排气倒流
[单选题]In a purifier changing to a gravity disc with larger hole diameter will move the interface towards the ().
A. bowl periphery
B. bowl center
C. upper surface
D. lower surface
[单选题]In the suction stroke air is induced into the cylinder ()In the compression stroke the air is compressed.
A. by an fuel valve
B. through an inlet valve
C. with an exhaust valve
D. from an outlet valve
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