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【題目】北京時間20111131366秒,天宮一號目標飛行器與神舟八號飛船成功實現首次會對接,右圖是神舟八號天玄一號首次對接空間位置示意圖。讀圖回答下列各題。

1

A. ①B. ②C. ③D. ④

2

A. 云霧 B. 流星 C. 太陽輻射 D. 太陽活動

【答案】

1A

2C

【解析】試題分析:

1】晨線與赤道的交點所在經線地方時為6點。當北京時間(東經120°經線的地方時)為1366秒時,地方時為當天6時所在經線應該位于180°附近,所以A選項最合理。另線與北極圈相切,應該表示的是1222日左右的狀況。

2】太陽活動強烈時,爆發(fā)的電磁波會引起電離層的擾動,引起無線電短波通信的中斷,干擾航天器和地面指揮系統(tǒng)的通信聯(lián)系,航天器和地面指揮系統(tǒng)聯(lián)系主要靠無線短波進行,會受到太陽活動的干擾導致通訊衰減或中斷。故C項正確。云霧、流星、太陽輻射均對通信沒有影響。

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