【简答题】![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)
2008年9月25日21时10分,长征二号F型运载火箭点火,神舟七号飞船在酒泉卫星发射中心升空.宇航员的舱外航天服每套总重量约120公斤,造价30000000元人民币左右,是我国自主研制的.经过专家严格评审,各项技术指标完全满足神舟七号飞行任务需要.30000000这个数用科学记数法表示为 [ ] A、0.3×108 B、3×107 C、30×106 D、0.03×109
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAA5ElEQVRYR2NkGGDAOMD2M+B0wKpVq9huv/jbxPD/fxwDA4MkhQ59zsDIuEhVgrkuLCzsF7JZOB3QOml5B8P//+UUWoyqnZGxszovsoI4B0xc9gyfzxmZmb2rcsK3IRvWMWm599///7fgcfTz6vwoKWId8B+f75kZGX0q8iK3kugAhur8KJRQxx0FE5fhdQC5UTPqgNEQGA2B0RAYDYHREBgNgaETAuTW96TqG7yt4tbRFhGRIQBqHTP9+8dIoDUMTxqk5AK8zXKYiaDWMYhNpANIaJYPdMdkwLtmpOZnctUPeDkAAP6tmiH1ggTLAAAAAElFTkSuQmCC)
手机使用
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/share-ico-3febd.png)
分享
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/link-f6c98.png)
复制链接
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/weibo-3e538.png)
新浪微博
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/qq-1c308.png)
分享QQ
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/wechat-a78ae.png)
微信扫一扫
微信内点击右上角“…”即可分享
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/report-ico-11843.png)
反馈
![收藏 - 刷刷题](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/coll-ico-cfcc9.png)
收藏
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/jubao-9c477.png)
举报
参考答案:
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)
参考解析:
![](https://cos-cdn.shuashuati.com/shuashuati-web/2024-0521-0905-00/logo-new-ad743.png)