[单项选择]型号为20Sh-19的离心泵，比转数为( )r/min。 A. 170 B. 180 C. 190 D. 200
参考答案:C
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第1题: [简答题]后羿(Houyi)是中国古代神话中的射日英雄。有时他也会被描绘为来自天上帮助人类的箭神(god of archery)。传说天上有十个太阳，地球上酷热无比，田野里的农作物枯萎(shrivel)了，湖泊和池塘也干涸(dry up)了。地球上太热了，人类已经没法生存了。为了拯救人类，后羿开始射日。他一个接一个地把太阳射了下来，如果不是别人提醒，他差点把最后一个也给射下来。严重的干旱最终消失了。据说后羿的妻子是嫦娥。嫦娥吞下了她从丈夫那里偷来的长生不老药，飞到了月球上。 参考答案:
Houyi was the hero who shot the suns in the ancient mythology of China. He is sometimes portrayed as a god of archery coming from the heaven to aid mankind. It is said that there were ten suns in the sky, and the heat on earth was intense. Crops shriveled in the fields and lakes and ponds dried up. It was too hot to live under the suns. To save people, Yi started to shoot the suns. He shot down nine of them one by one, and he might have shot the last one if he was not reminded by others. Thus the severe drought was gone. It is said Yi’s wife was Chang E, a legendary lady in the famous story. Chang E swallowed the elixir stolen from her husband, and she flew to the moon.
