【名词&注释】
热喷涂(thermal spraying)、增压器(turbocharger)、排气阀(exhaust valve)、二冲程柴油机(two-stroke diesel engine)、电动鼓风机(electric blower)
[单选题]拆装增压器时对于转子上的零件及其位置不可以随意更换和改动,以免影响()。Ⅰ.对中性;Ⅱ.运转;Ⅲ.平衡精度;Ⅳ.振动;Ⅴ.转子变形。
A. Ⅲ+Ⅳ+Ⅴ
B. Ⅰ+Ⅲ
C. Ⅰ+Ⅱ+Ⅴ
D. Ⅰ+Ⅲ+Ⅳ
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学习资料:
[单选题]排气阀阀面磨损严重时,采用()修复。
A. 研阀
B. 更换气阀
C. 堆焊
D. 堆焊阀座
[单选题]主机底脚螺栓松动则可能导致()。Ⅰ.垫块磨损;Ⅱ.机座局部下沉;Ⅲ.曲轴变形;Ⅳ.主机振动。
A. Ⅱ+Ⅳ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅲ+Ⅳ
D. Ⅰ+Ⅱ+Ⅲ+Ⅳ
[单选题]船轴工作轴颈磨损后可采取()修复。
A. 光车
B. 热喷涂
C. 镀铬
D. 镀铁
[单选题]二冲程柴油机停增压器运转时使用电动鼓风机(electric blower)供气,此时柴油机可达到标定功率的()。
A. 20%
B. 25%
C. 30%
D. 35%
[单选题]Since the burning or combustion takes place within the engine itself, the engine is known as ().
A. a fire -tube boiler
B. an internal combustion engine
C. an external combustion engine
D. an internal combustion generator
[单选题]Smaller engines can be made more rigid than large ones and may not have ().
A. through bolts
B. turbo-chargers
C. bed plates
D. colum
[单选题]The diesel engine is a type of ().
A. turbine engine
B. gas turbine
C. steam engine
D. internal combustion engine
[单选题]Generating tubes in waste heat boilers are finned to ().
A. reduce gas flow turbulence
B. prevent exhaust gas corrosion
C. increase the rate of combustion
D. increase the rate of heat transfer
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