正确答案: C

合理校中

题目：目前钢质海船建造时安装的轴系广泛采用（）。

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学习资料的答案和解析：

[单选题]缸盖底面裂纹一般多产生在（），即有应力集中的部位。Ⅰ.阀孔周围；Ⅱ.阀孔边缘；Ⅲ.阀孔之间；Ⅳ.阀孔座面；Ⅴ.底面圆周方向。

D．Ⅱ＋Ⅲ

[单选题]柴油机冷态即环境温度下测量曲轴臂距差具有测量值（）。Ⅰ.准确；Ⅱ.符合规范；Ⅲ.稳定；Ⅳ.便于操作；Ⅴ.不受温度影响。

Ⅰ＋Ⅲ＋Ⅳ

[单选题]水润滑式艉轴非工作轴颈一般包覆（）或（）。

玻璃钢/橡胶

[单选题]安装艉轴和螺旋桨时（）应在现场监督。

轮机长

[单选题]Care and cleanliness are required when installing diesel fuel filters （）.

both of the above

[单选题]The engine is started with （） supplied from air receivers.

compressed air

[单选题]After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the （）.

furnace to be re-purged

[单选题]A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of（）.

iron or steel