题目内容

悬架一般由、和三个基本部分组成。

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按照控制形式不同,悬架可以分为、和。

按照转向能源的不同转向系可分为和两大类。

的转角与安装在转向盘同侧的偏转角的比值,成为转向系角传动比。

[音频]Listen to the recording and fill in the blanks with the missing information.12 We _1first responders to rush toward danger, especially when it 2__ us or those we love. We expect nothing less. So when one of them dies doing that, we should _3_the heroic action even though we may doubt our own 4______ to be heroic ourselves.