车轴齿轮箱总成发生异响或噪声太大的原因为润滑油中杂有异物，（_爱下问搜题

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问题填空题

车轴齿轮箱总成发生异响或噪声太大的原因为润滑油中杂有异物，（）过大，轴头压板螺栓或螺母松旷，螺旋锥齿轮啮合侧隙太大或齿面有硬点，轴承或齿轮损坏。

答案

参考答案：轴承轴向游隙

改错题

短文改错。
     此题要求改正所给短文中的错误。对标有题号的每一行做出判断：
     如有错误（每行只有一个错误），则按下列情况改正：
     此行多一个词：把多余的词用斜线(\)划掉，在该行右边横线上写出该词，并也用斜线划掉。
     此行缺一个词：在缺词处加一个漏字符号(^)，在该行右边横线上写出该加的词。
     此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
     注意：原行没有错的不要改。

Nowadays in United States, more and more people are
beginning to build underground houses where save open land.
When houses are underground, there are more land for parks,
playgrounds and gardens. Underground house also save energy.
They use only a few energy to stay warm or cool. As we know,
the idea underground houses is very old. People in the past
live in underground houses and underground cities in China. And
today you can't find large underground shopping centers in China,
Japan, South Korea and Canada as well as. Some countries also
build underground factories and shop-houses to held things.

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问答题简答题

我国社会体育工作的基本任务有哪些？