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1
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n
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2
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鎯呮櫙瀵煎叆
鐢熸垚闂
1
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2
蟺
r
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S
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蟺
r
2
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2
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OA
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2
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60
掳锛屽浣曡绠?/p>
AB
锔?
鐨勯暱鍜屾墖褰?/p>
AOB
鐨勯潰绉紟
绛旓細
AB
锔?/p>
鐨勯暱鏄?/p>
1
6
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1
6
路
2
蟺
路
2
锛?/p>
2
3
蟺
锛?/p>
鎵囧舰
AOB
闈㈢Н鏄?/p>
1
6
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1
6
路
蟺
路
2
2
锛?/p>
2
3
蟺
.
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P
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P
61
锛屽畬鎴愪笅鍒楅棶棰橈細
闂锛氬姬闀胯绠楀叕寮忔槸浠�涔堬紵
绛旓細濡傛灉寮ч暱涓?/p>
l
锛屽渾蹇冭鐨勫害鏁颁负
n
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r
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l
锛?/p>
n
360
路
2
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r
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n
蟺
r
180
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鍏紡涓?/p>
l
锛?/p>
n
蟺
r
180
.
鑼冧緥锛氫竴涓墖褰㈢殑鍗婂緞涓?/p>
8
cm
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16
3
蟺
cm
锛屽垯鎵囧舰鐨勫渾蹇冭涓?/p>
(
B
)
A
锛?/p>
60
掳
B
锛?/p>
120
掳
C
锛?/p>
150
掳
D
锛?/p>
180
掳
浠夸緥
1
锛?/p>
(
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)
濡傚浘锛?/p>
涓�鏉″叕璺殑杞?/p>
寮鏄竴娈靛渾寮?/p>
(
鍗冲浘涓?/p>
CD
锔?/p>
锛岀偣
O
鏄?/p>
CD
锔?
鐨勫渾蹇?/p>
)
锛屽叾涓?/p>
CD
锛?/p>
600
m
锛?/p>
E
涓?/p>
CD
锔?
涓婁竴鐐癸紝涓?/p>
OE鈯D锛屽瀭瓒充负
F
锛?/p>
OF
锛?/p>
300
3
m
锛屽垯杩欐寮矾鐨勯暱搴︿负
(
A
)
A
锛?/p>
200
蟺
m
B
锛?/p>
100
蟺
m
C
锛?/p>
400
蟺
m
D
锛?/p>
300
蟺
m
浠夸緥
2
锛氬凡鐭ユ墖褰㈢殑鍦嗗績瑙掓槸
60
掳锛屽姬鏄?/p>
3
蟺
cm
锛屽垯鎵囧舰鐨勫崐寰勬槸
9
cm
锛?/p>