正确答案: A
过度磨损
题目:铁梨木舵承发生()时应更换。
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学习资料的答案和解析:
[单选题]MAN-B&W公司推出的带汽轮发电机的废气锅炉系统,主要特点是它带有给水预热器、蒸发器和过热器的单压蒸汽系统;产生的蒸汽除用于加热外还可用于驱动汽轮发电机;废气锅炉与燃油辅助锅炉之间有循环水泵并共用汽鼓。对其评价可选为()。
排气余热利用较完善,能满足汽轮发电机和加热系统所需蒸汽量
[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。
Ⅲ+Ⅳ+Ⅴ
[单选题]船轴腐蚀主要发生在()。
艉轴
[单选题]合成材料艉轴承中以()艉轴承应用日益增多。
赛龙
[单选题]() device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.
An interlocking
[单选题]A variable pitch propeller is made () a boss with separate blades mounted into it.
up of
[单选题]On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as()
cooling jacket
[单选题]The viscosity regulator controls () in order to provide oil at the correct viscosity for combustion.
the fuel oil temperature