鏁板璇曞嵎绗?/p>
1
椤?/p>
2009
骞翠复娌傚競涓�冩暟瀛﹁瘯棰?/p>
涓�銆侀�夋嫨棰橈紙鏈ぇ棰樺叡
14
灏忛锛屾瘡灏忛
3
鍒嗭紝鍏?/p>
42
鍒嗭級
锛?/p>
1
锛?/p>
9
飥?/p>
鐨勭浉鍙嶆暟鏄紙
锛?/p>
A
锛?
1
9
B
锛?/p>
1
9
飥?
C
锛?/p>
9
飥?/p>
D
锛?/p>
9
2
锛庢煇绉嶆祦鎰熺梾姣掔殑鐩村緞鏄?/p>
0.00000008m
锛岃繖涓暟鎹敤绉戝璁版暟娉曡〃绀轰负锛?/p>
锛?/p>
A
锛?/p>
6
8
10
m
飥?/p>
飩?/p>
B
锛?/p>
5
8
10
m
飥?/p>
飩?/p>
C
锛?/p>
8
8
10
m
飥?/p>
飩?/p>
D
锛?/p>
4
8
10
m
飥?/p>
飩?/p>
3
锛庝笅鍒楀悇寮忚绠楁纭殑鏄紙
锛?/p>
A
锛?/p>
3
4
x
x
x
飥?/p>
飥?/p>
B
锛?/p>
2
5
10
路
x
x
x
飥?/p>
C
锛?/p>
4
2
8
(
)
x
x
飥?/p>
D
锛?/p>
2
2
4
(
0)
x
x
x
x
飥?/p>
飥?/p>
飩?/p>
4
锛庝笅鍒楀浘褰腑锛岀敱
AB
CD
鈭?/p>
锛岃兘寰楀埌
1
2
飪?/p>
飥?/p>
飪?/p>
鐨勬槸锛?/p>
锛?/p>
5
锛庤绠?/p>
1
27
18
12
3
飥?
飥?/p>
鐨勭粨鏋滄槸锛?/p>
锛?/p>
A
锛?/p>
1
B
锛?/p>
1
飥?/p>
C
锛?/p>
3
2
飥?/p>
D
锛?/p>
2
3
飥?/p>
6
锛庡寲绠�
2
2
4
2
2
b
a
a
b
b
a
飥?/p>
飥?/p>
飥?/p>
鐨勭粨鏋滄槸锛?/p>
锛?/p>
A
锛?/p>
2
a
b
飥?/p>
飥?/p>
B
锛?/p>
2
b
a
飥?/p>
C
锛?/p>
2
a
b
飥?/p>
D
锛?/p>
2
b
a
飥?/p>
7
锛?/p>
宸茬煡
1
O
鈯?/p>
鍜?/p>
2
O
鈯?/p>
鐩稿垏锛?/p>
1
O
鈯?/p>
鐨勭洿寰勪负
9
C
m
锛?/p>
2
O
鈯?/p>
鐨勭洿寰勪负
4cm
锛?
鍒?/p>
1
2
O
O
鐨勯暱鏄?/p>
锛?/p>
锛?/p>
A
锛?/p>
5cm
鎴?/p>
13cm
B
锛?/p>
2.5cm
C
锛?/p>
6.5cm
D
锛?/p>
2.5cm
鎴?/p>
6.5cm
8
锛庡鍥撅紝
OP
骞冲垎
AOB
飪?/p>
锛?/p>
PA
OA
飦?/p>
锛?/p>
PB
OB
飦?/p>
锛屽瀭瓒冲垎鍒负
A
锛?/p>
B
锛庝笅鍒楃粨璁轰腑涓嶄竴
瀹氭垚绔嬬殑鏄紙
锛?/p>
A
锛?/p>
PA
PB
飥?/p>
B
锛?/p>
PO
骞冲垎
APB
飪?/p>
C
锛?/p>
OA
OB
飥?/p>
D
锛?/p>
AB
鍨傜洿骞冲垎
OP
9
锛庡浜庢暟鎹細
80
锛?/p>
88
锛?/p>
85
锛?/p>
85
锛?/p>
83
锛?/p>
83
锛?/p>
84
锛庝笅鍒楄娉曚腑閿欒鐨勬湁锛?/p>
锛?/p>
A
锛庤繖缁勬暟鎹殑骞冲潎鏁版槸
84
B
锛庤繖缁勬暟鎹殑浼楁暟鏄?/p>
85
C
锛庤繖缁勬暟鎹殑涓綅鏁版槸
84
D
锛庤繖缁勬暟鎹殑鏂瑰樊鏄?/p>
36
A
锛?/p>
1
涓?/p>
B
锛?/p>
2
涓?/p>
C
锛?/p>
3
涓?/p>
D
锛?/p>
4
涓?/p>
10
锛庤嫢
x
y
飥?/p>
锛屽垯涓嬪垪寮忓瓙閿欒鐨勬槸锛?/p>
锛?/p>
A
锛?/p>
3
3
x
y
飥?/p>
飥?/p>
飥?/p>
B
锛?/p>
3
3
x
y
飥?/p>
飥?/p>
飥?/p>
C
锛?/p>
3
2
x
y
飥?/p>
飥?/p>
飥?/p>
D
锛?
3
3
x
y
飥?/p>
11
锛庡鍥撅紝鍦ㄧ瓑鑵版褰?/p>
ABCD
涓紝
AD
BC
鈭?/p>
锛屽瑙掔嚎
AC
BD
飦?/p>
浜庣偣
O
锛?
AE
BC
DF
BC
飦?/p>
飦?/p>
锛?/p>
锛屽瀭瓒冲垎鍒负
E
銆?/p>
F
锛岃
AD
=
a
锛?/p>
BC
=
b
锛屽垯鍥涜竟褰?/p>
AEFD
鐨勫懆闀挎槸锛?/p>
锛?/p>
A
锛?/p>
3
a
b
飥?/p>
B
锛?/p>
2(
)
a
b
飥?/p>
C
锛?/p>
2
b
a
飥?/p>
D
锛?/p>
4
a
b
飥?/p>
12
锛庡鍥炬槸涓�涓寘瑁呯洅鐨勪笁瑙嗗浘锛屽垯杩欎釜鍖呰鐩掔殑浣撶Н鏄紙
锛?/p>
12cm
4cm
锛堢
12
棰樺浘锛?/p>
A
C
B
D
1
2
A
C
B
D
1
2
A
锛?/p>
B
锛?/p>
1
2
A
C
B
D
C
锛?/p>
B
D
C
A
D
锛?/p>
1
2
D
C
A
B
E
F
O
锛堢
11
棰樺浘锛?/p>
O
锛堢
8
棰樺浘锛?/p>
B
A
P