it should be 12,30s. poonu's answer is right, your LP will be issued soon. immigration section of Canada. hahahaha. :--)

hohohoho (我喜欢 compaq M700)
2001-11-19 -04:00
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Back To Topic: 出一道题,限30s内回答----一个正点报时的大钟,几点就敲击几下,每两下之间5s间隔,问:1)如果要确定是否12点,从第一声起,至少要听几下?2)如果要确定是否6点,从第一声起,至少要听多长时间?

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