正确答案: B
up of
题目:A variable pitch propeller is made () a boss with separate blades mounted into it.
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学习资料的答案和解析:
[单选题]对筒状活塞式柴油机,在未装活塞环的条件下,活塞位于近上、下止点位置时,活塞裙部与气缸内孔单边最小间隙应不小于()。
该处总间隙的25%
[单选题]用液压工具拆主机主轴承液压撑杆螺栓和缸头螺栓时,要注意()。
前者是将螺栓压缩,而后者是将螺栓拉长
[单选题]增压器转子拆卸前后不需检测()。
轴承间隙
[单选题]螺旋桨桨叶上的缺陷采用焊补修理后应进行()和()处理。
质量检验/退火
[单选题]The cooling water temperature () over a period of 8 hours, and then shut down.
should be gradually reduced
[单选题]The fuel injection system is very important, so any trouble of it will () the operation of the main engine.
affect
[单选题]To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of ().
monel metal or stainless steel
[单选题]An automated diesel engine should normally shut down due to ()
low tube oil pressure