【名词&注释】
超声波(ultrasonic)、液压油(hydraulic oil)、观察法、实际上(actually)、柴油机动力装置(diesel power plant)
[单选题]巨大型船舶对动力装置的重量和尺度没有特别要求,一般采用()柴油机动力装置(diesel power plant)。
A. 低速机
B. 中速机
C. 高速机
D. 多机多桨
查看答案&解析
查看所有试题
学习资料:
[单选题]在约定MCR工况下,建议废气管内流速不超过50m/s,实际上为避免压力损失太大,废气流速约为()m/s
A. 40
B. 35
C. 30
D. 25
[单选题]为了防止液压拉伸器密封环的损坏,在()设计了特殊的泄油孔,当活塞的升程超过了其“最大升程”时,液压油会迅速从泄油孔泄放。
A. 活塞顶部
B. 油缸的侧面
C. 活塞的底部
D. 油缸的下部
[单选题]舵杆表面的裂纹应采用()检查。
A. 超声波探伤
B. 磁力探伤
C. 观察法
D. 荧光探伤
[单选题]() is the removal of exhaust gases by blowing in fresh air.
A. Gas exchange
B. Charging
C. Scavenging
D. Supercharging
[单选题]Before a marine diesel engine is started the cylinders and pistons must be ().
A. cooled to appropriate temperature
B. warmed up gradually to appropriate temperature
C. opened up and renewed
D. ground and polished
[单选题]The most important factor that causes the wear of the engine parts is ().
A. excessive heat
B. friction
C. oxidation
D. high pressure
本文链接:https://www.51bdks.net/show/z53gze.html