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

【名词&注释】

工作压力(working pressure)、喷油泵(fuel injection pump)、轮机员(engineer)、生产厂家(manufacturer)、水蒸气分压(steam partial pressure)

[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^{(steam partial pressure)}

A. Ⅰ+Ⅱ
B. Ⅱ+Ⅲ
C. Ⅰ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ

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学习资料：

[单选题]在重新组装回油孔调节式喷油泵时，为了保证齿条刻度指示的零位与柱塞套筒的实际零位（油泵柱塞直槽对准套筒上的回油孔）一致，生产厂家在（）之间做了对中记号，轮机员必须将两者对齐。

A. 齿条和齿套
B. 柱塞和套筒
C. 齿条与泵体
D. 齿条与套筒

[单选题]船轴表面裂纹可采用（）进行无损检测。Ⅰ.着色探伤；Ⅱ.煤油-白粉；Ⅲ.磁粉探伤；Ⅳ.超声波探伤；Ⅴ.X射线探伤。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅲ
C. Ⅰ＋Ⅲ＋Ⅴ
D. Ⅰ＋Ⅱ＋Ⅲ

[单选题]It is necessary to remove （） from the cooling spaces.

A. scar
B. scale
C. spur
D. bilge

[单选题]The cleaned heated oil, after passing through the centrifuges, is to be pumped to a （）.

A. settling tank
B. service tank
C. ballast tank
D. drain tank

[单选题]Which of the following can be obtained by means of an indicator card?（）

A. the peak pressure in a cylinder
B. the temperature of the cooling water
C. the fuel consumption
D. none of the above

[单选题]With the crank in position in the engine, some measurements can be taken by a special bridge gauge and （）.

A. a micrometer
B. a bowl
C. a feeler gauge
D. a wrench

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