【单选题】螺旋桨的效率是_____

【单选题】165使用螺旋桨技术最主要的目的是

【简答题】可将HSE体系比喻成螺旋桨，其轴心是（ ）。

【单选题】螺旋桨常用的材料是________。

【单选题】螺旋桨桨叶扭转的目的是（）。

【单选题】螺旋桨推力功率THP为()。

【单选题】Amphibious vehicles, those that can move on both land and water, have been in use for a number of years, but while most of them were fairly fast on land, they moved quite slowly when they were functio...

【单选题】螺旋桨的（）为螺旋桨主要的几何参数。

【单选题】Amphibious vehicles, those that can move on both land and water, have been in use for a number of years, but while most of them were fairly fast on land, they moved quite slowly when they were functio...

【填空题】电动螺旋桨调速器的主要组成包括：（）.