4.1
绗?/p>
2
璇炬椂
姣斾緥绾挎
涓�銆侀�夋嫨棰?/p>
1
锛庝笅闈㈠洓鏉＄嚎娈典腑锛屼笉鑳芥垚姣斾緥鐨勬槸
(
)
A
锛?/p>
a
锛?/p>
3
锛?/p>
b
锛?/p>
6
锛?/p>
c
锛?/p>
2
锛?/p>
d
锛?/p>
4
B
锛?/p>
a
锛?/p>
1
锛?/p>
b
锛?/p>
2
锛?/p>
c
锛?/p>
6
锛?/p>
d
锛?/p>
3
C
锛?/p>
a
锛?/p>
4
锛?/p>
b
锛?/p>
6
锛?/p>
c
锛?/p>
5
锛?/p>
d
锛?/p>
10
D
锛?/p>
a
锛?/p>
2
锛?/p>
b
锛?/p>
5
锛?/p>
c
锛?/p>
15
锛?/p>
d
锛?/p>
2
3
2
锛庡鍥?/p>
K
锛?/p>
28
锛?/p>
1
鎵�绀猴紝涓嬪垪鍚勭粍姣斾腑锛屾瘮鍊间笉鐩哥瓑鐨勬槸
(
)
鍥?/p>
K
锛?/p>
28
锛?/p>
1
A.
AE
EC
鍜?/p>
AD
BD
B.
AD
AB
鍜?/p>
DE
BC
C.
AC
BC
鍜?/p>
AE
DE
D.
AD
DE
鍜?/p>
DB
BC
3
锛庡鍥?/p>
K
锛?/p>
28
锛?/p>
2
鎵�绀猴紝涓�寮犵煩褰㈢焊鐗?/p>
ABCD
鐨勯暱
AB
锛?/p>
a
cm
锛屽
BC
锛?/p>
b
cm
锛?/p>
E
锛?/p>
F
鍒嗗埆涓?
AB
锛?/p>
CD
鐨勪腑鐐癸紝杩欏紶绾哥墖娌跨洿绾?/p>
EF
瀵规姌鍚庯紝鐭╁舰
AEFD
鐨勯暱涓庡涔嬫瘮绛変簬鐭╁舰
ABCD
鐨勯暱涓?
瀹戒箣姣旓紝鍒?/p>
a
鈭?/p>
b
绛変簬
(
)
鍥?/p>
K
锛?/p>
28
锛?/p>
2
A.
2
鈭?
B
锛?/p>
1
鈭?/p>
2C.
3
鈭?
D
锛?/p>
1
鈭?/p>
3
浜屻�佸～绌洪
4
锛庡鍥?/p>
K
锛?/p>
28
锛?/p>
3
鏄櫨搴﹀湴鍥剧殑涓�閮ㄥ垎
(
姣斾緥灏轰负
1鈭?000000)锛庢寜鍥惧彲浼版祴鏉窞鍦ㄥ槈
鍏寸殑鍗楀亸瑗?/p>
________
搴︽柟鍚戜笂锛屾澀宸炲埌鍢夊叴鐨勫浘涓婅窛绂荤害涓?/p>
2 cm
锛屽垯鏉窞鍒板槈鍏寸殑瀹為檯璺?/p>
绂荤害涓?/p>
________km.