ݲ֧


֮չ
÷Χ
----顢ꡢѧҵҵ
Ѿѧǰеͣôϲ㣡Ѿ׼ѧϰӵķ----"֮չ"ַδغ
ѣõȫĴ󰢶ǶʮƣҲЩ൱ʱҪСĵƲร
ַʺûضƲ⡣ȷ˵û󣬴֪Σ˽Ƶ״ȵȣ
֮ǻбȽϸĽ͡

ڷ
1ȰһϴơƵĳк󣬵õһ泯µơ򷭹泯ϡ
2Ҫҳ""ơϵĵһŲ磬Ͱ·ֱߡһһŵңֱ
Ϊֹע⣺ȻҪ˳泯£һ
3ҵ֮󣬰Ҳ泯£ڼƵϡţѽ֮ƣͼʾ˳(1)(7)λá
ŷƣֱӽ泯ϡ
Ҳָ֮ƲŵΣʱҪѸոռƵ泯ϣȻĵһſʼ
š
4ǰŶͶλԺ󣬴ӵڰſʼѰ˵ʮŵڸոƵ½(ͼʾ)͸ոһѾûˣ
ҪѼƵ泯ϣӵһſʼ㡣ȻˣոѾƵڲĻھͼȥ
5ͨ˵ʮԺӦöѾƵڲˡԵֵʮ嵽ʮһƣͼȥڸոյڶƵ½ǡ
6ȵȫƶȥˣӦûῴһͼȫѾ泯ϵ״Ӧֻʣһ""
ƾʹ߱ˡƷŵǰ泯/(ΪԼƲ⣬㽫ƵԼ)


λ
֮һ߸λáÿλơÿλõǣ
(1)Ŀǰʵ״
(2)Ǽ¼
(3)߶
(4)Ρ
(5)ֵܳ⡣
(6)ûע⵽ĵˡ
(7)
ʱÿλõ壬ۺϸλƵĺ͡


                          3
                            10
                               17

            5                      1
              12       7             8
                 19      14            15
                            21          
        6                       4
          13         2            11
             20        9             18
                     16