【名词&注释】
发动机、船用柴油机(marine diesel engine)、柴油机气缸套(engine cylinder liner)
[单选题]影响发动机加速时问长短的因素是它的()。I.运行部件的质量惯性;Ⅱ.受热部件的热惯性
A. 仅Ⅰ对
B. 仅Ⅱ对
C. Ⅰ+Ⅱ
D. Ⅰ,Ⅱ都不对
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学习资料:
[单选题]6250型船用柴油机气缸套最大内径增量为1.5mm,则最大缸径为()。
A. 251.5mm
B. 51.5mm
C. 626.5mm
D. 63.5mm
[单选题]大型海船艉轴工作轴颈较长,所包覆的铜套过长,加工和安装均不便,故将铜套分段加工、套合,但必须保证()的水密性。
A. 铜套铸件
B. 安装
C. 接缝处
D. 套合
[单选题]铁梨木舵承发生()时应更换。
A. 过度磨损
B. 变形
C. 开裂
D. 裂纹
[单选题]In each cylinder cover there are two or three holes for ()
A. the exhaust valves
B. the fuel valves
C. indicator cocks
D. the fuel pum
[单选题]Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?()
A. Maintains a constant head on the system
B. Reduces the likelihood of air or steam pockets formation
C. Provides a low pressure point for the addition of makeup cooling water
D. All of the above
[单选题]Which term describes piston pins having bearing surfaces in both the piston bosses and connecting rod eye?()
A. Stationary
B. Full floating
C. Semi-floating
D. Free rolling
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