【名词&注释】
螺旋桨(propeller)、柴油机(diesel engine)、开口销(split pin)、涡轮机(turbine)、进排气阀(inspiration exhaust valve)、不满足(does not satisfy)、增压器转子(blower rotor)
[单选题]在检修连杆大端轴承时,必须换新的是()。
A. 螺栓和螺母
B. 轴承上瓦
C. 防松垫片或开口销
D. 调整垫片
查看答案&解析
查看所有试题
学习资料:
[单选题]航行中对发电柴油机曲轴的断裂可以应急焊接修理,并进行封缸以维持柴油机运转。封缸的正确操作应该是()。Ⅰ.停止燃烧;Ⅱ.降速运行;Ⅲ.吊出活塞连杆;Ⅳ.封死气缸启动阀;Ⅴ.关闭进排气阀。
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ
C. Ⅰ+Ⅲ+Ⅳ+Ⅴ
D. Ⅰ+Ⅲ+Ⅴ
[单选题]在水平平面内,当曲柄的两个主轴承位置偏右,曲轴轴线呈右弧线弯曲(即呈“)”形)时,该曲柄的臂距差Δ-为()值。
A. 正
B. 负
C. 零
D. 正或零
[单选题]增压器转子(blower rotor)校中时若压气机叶轮前后间隙不满足(does not satisfy)要求时应采取()措施。
A. 增加压气机端转子轴的调位垫片
B. 减少压气机端转子轴的调位垫片
C. 交换压气机端和涡轮机侧转子轴的调位垫片
D. 以上均是
[单选题]直接传动的轴系主要包括()等零部件。Ⅰ.推力轴及其轴承;Ⅱ.中间轴及其轴承;Ⅲ.艉轴及其轴承;Ⅳ.艉轴管装置;Ⅴ.螺旋桨。
A. Ⅱ+Ⅲ
B. Ⅰ+Ⅱ
C. Ⅰ+Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ+Ⅳ
[单选题]A-frames are mounted on the bed plate and support () and cylinder block.
A. the main bearing
B. the cylinder cover
C. the entablature
D. the sum
[单选题]One method of constructing large marine diesel engines and reducing the total engine frame weight is through ().
A. casting interlocking components
B. welding plates to form sections for assembly
C. forging integral components
D. case hardening integral component
[单选题]The main purpose of the piston oil scraper rings is to ().
A. seal the space between the piston and the liner
B. reduce the amount of lube oil burned in the combustion chamber
C. transmit heat from the piston to the cylinder liner
D. damp out fluctuations of the piston side thrust
本文链接:https://www.51bdks.net/show/on505j.html