【名词&注释】
过热器(superheater)、蒸发器(evaporator)、给水预热器(feed unit water preheater)
[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
查看答案&解析
查看所有试题
学习资料:
[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()。
A. 该废气锅炉系统布置合理,但满足汽轮发电机所需蒸汽量时,不能满足加热之需
B. 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
C. 该废气锅炉系统更先进,不仅满足加热系统的要求,还部分满足汽轮发电机之需
D. 该废气锅炉系统适宜于各类功率大小的船舶
[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
[单选题]船轴腐蚀主要发生在()。
A. 推力轴
B. 中间轴
C. 艉轴
D. 曲轴
[单选题]合成材料艉轴承中以()艉轴承应用日益增多。
A. 尼龙
B. 赛龙
C. 环氧树酯
D. 塑料
[单选题]() device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.
A. An automatic
B. A transmission
C. A self-regulating
D. An interlocking
[单选题]A variable pitch propeller is made () a boss with separate blades mounted into it.
A. of
B. up of
C. from
D. out
[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 viscosity regulator controls () in order to provide oil at the correct viscosity for combustion.
A. the engines speed
B. the engines load
C. the fuel oil temperature
D. the fuel oil flow
本文链接:https://www.51bdks.net/show/0qowy3.html