题目内容

在18世纪的欧洲和和20世纪70年代末的中国各有一次重要的思想解放运动。请根据这两次重要的思想解放运动回答下面问题：列出当时的代表各一位。

查看答案

搜索结果不匹配？点我反馈

更多问题

When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations √This is done to （）

A. maintain alignment when the ship’s hull is working in heavy seas
B. ensure engine vibrations correspond to the natural frequency of the hull
C. permit the engine to expand away from the driven equipment as the engine heats up and expands
D. maintain engine thrust bearing clearance

查看答案