正确答案: C

50

题目：船舶在营运中，动力装置的维护费占船舶总费用的比例很大，最大可超过（）%.

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]废气锅炉出口排烟温度t2不应低于露点，排气露点与（）有关。Ⅰ.废气锅炉蒸汽工作压力；Ⅱ.燃油的含硫量；Ⅲ.排气中的水蒸气分压

Ⅱ+Ⅲ

[单选题]连杆大小端轴承孔平台检验时应检查二者的中心线的（）。

在垂直平面和水平平面内的平行度

[单选题]曲折反映了两相邻轴轴心线呈（）的状态。

相交且法兰中心对准

[单选题]Of a kind of liquid is used to cool the diesel engine, it is invariably called （）

coolant

[单选题]If the atomizer holes are enlarged beyond the makers recommended size, the atomizer must be （）.

replaced

[单选题]The machine has stopped rotating because the bearing （） the shaft.

seized

[单选题]For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.

it develops twice as many power strokes at the same speed