【名词&注释】
汽轮机(steam turbine)、柴油机增压器(diesel supercharging)、二冲程低速、燃气动力装置(gas power plant)
[单选题]艉轴裂纹主要发生在()等处。Ⅰ.法兰根部;Ⅱ.工作轴颈;Ⅲ.铜套接缝处轴颈;Ⅳ.键槽根部;Ⅴ.锥部大端截面变化。
A. Ⅱ+Ⅲ
B. Ⅰ+Ⅱ+Ⅳ
C. Ⅲ+Ⅳ+Ⅴ
D. Ⅰ+Ⅲ+Ⅳ
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学习资料:
[单选题]汽轮机动力装置与燃气动力装置(gas power plant)相比,其主要缺点是()。
A. 转速高
B. 效率低
C. 体积大
D. 噪声大
[单选题]废气锅炉的排气流动阻力不能过大,因为二冲程低速柴油机增压器后的排气背压规定一般不宜超过()。
A. 0.003MPa
B. 300mmH,0
C. 3000Pa
D. A,B,C均可
[单选题]Fuels of high quality with their earlier ignitions will cause higher ()pressure in cylinders of a diesel engine.
A. compression
B. maximum
C. rated
D. oil
[单选题]In large marine diesel engines cylinder oils usually contain additives formulated to impart the () to clean the rings and grooves.
A. inefficiency
B. oiliness
C. detergency
D. purity
[单选题]On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as()
A. cooling jacket
B. cylinder liner
C. piston crown
D. cylinder cover
[单选题]The fuel injection system is very important, so any trouble of it will () the operation of the main engine.
A. be affected
B. affect
C. be effected
D. effect
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