绗?/p>
24
绔?/p>
24.4
銆婂姬闀垮拰鎵囧舰闈㈢Н銆嬪悓姝ョ粌涔犲強绛旀
(1)
涓�銆?/p>
鍙屽熀鏁村悎锛?/p>
1
锛庤嫢鎵囧舰闈㈢Н涓?/p>
3
飦?/p>
锛屽崐寰勪负
3
锛屽垯寮ч暱涓?/p>
_______
锛屽渾蹇冭鏄?/p>
________
锛?/p>
2
锛庢湁涓�娈靛集閬撴槸鍦嗗姬褰㈢殑锛屽鍥?/p>
1
锛岄亾闀挎槸
12m
锛屽姬鎵�瀵圭殑鍦嗗績瑙掓槸
81
掳锛?/p>
鈥?/p>
姹傝繖娈靛姬鐨勫崐寰?/p>
R
涓?/p>
________
锛?/p>
锛堢簿纭埌
0.1m
锛?/p>
(1) (2) (3)
3
锛庡鍥?/p>
2
锛屾鈻?/p>
ABC
鐨勮竟闀?/p>
AB=2
锛屼互
A
涓哄渾蹇冪殑鍦嗗垏
BC
浜庣偣
D
锛屼氦
AB
浜庣偣
E
锛屼氦
AC鈥?/p>
浜庣偣
F
锛屽垯
EF
鐨勯暱
=_________
锛?/p>
4
锛庡鍥?/p>
3
鎵�绀猴紝涓変釜鍦嗘槸鍚屽績鍦嗭紝鍥句腑闃村奖閮ㄥ垎鐨勯潰绉负
______
锛?/p>
5
锛庡鍥?/p>
4
锛?/p>
Rt
鈻?/p>
ABC
涓紝鈭?/p>
C=90
掳锛?/p>
AC=2
锛?/p>
AB=4
锛屽垎鍒互
AC
銆?/p>
BC
涓虹洿寰勪綔鍗婂渾锛?/p>
鈥?/p>
鍒欏浘涓槾褰遍儴鍒?/p>
鐨勯潰绉负
________
锛?/p>
(4) (5) (6)
6
锛庡凡鐭ヤ竴寮х殑鍗婂緞涓?/p>
3
锛屽姬闀夸负
2
飦?/p>
锛屽垯姝ゅ姬鎵�瀵圭殑鍦嗗績瑙掍负锛?/p>
锛?/p>
A
锛?/p>
锛?
2
3
飦?
锛壜?/p>
B
锛?/p>
240
掳
C
锛?/p>
120
掳
D
锛?/p>
60
掳
7
锛庡鍥?/p>
5
锛岀煩褰?/p>
ABCD
涓紝
AB=1
锛?/p>
AD=
3
锛屼互
BC
鐨勪腑鐐?/p>
E
涓哄渾蹇冪殑
录
MPN
涓?/p>
AD
鐩稿垏锛屽垯鍥句腑闃村奖
閮ㄥ垎鐨勯潰绉负锛?/p>
锛?/p>
A
锛?
2
3
B
锛?/p>
3
4
C
锛?/p>
5
4
D
锛?/p>
3
飦?
8
锛庣鍗冩媺缁抽暱
3
绫筹紝闈欐鏃惰俯鏉跨鍦伴潰
0.5
绫筹紝鏌愬皬鏈嬪弸鑽¤绉嬪崈鏃讹紝
鈥?/p>
绉嬪崈鍦ㄦ渶楂樺韪╂澘绂诲湴闈?/p>
2
绫筹紙宸﹀彸瀵圭О锛?/p>
锛屽垯璇ョ鍗冩墍鑽¤繃鐨勫渾寮ч暱涓猴紙
锛?/p>
A
锛?/p>
飦?/p>
绫?/p>
B
锛?/p>
2
飦?/p>
绫?/p>
C
锛?
4
3
飦?/p>
绫?/p>
D
锛?/p>
3
2
飦?/p>
绫?/p>
9
锛庢涓夎褰?/p>
ABC
鍐呮帴浜庡崐寰勪负
2cm
鐨勫渾锛屽垯
AB
鎵�瀵瑰姬鐨勯暱涓猴紙
锛?/p>
A
锛?
2
3
飦?/p>
B
锛?/p>
4
3
飦?/p>
C
锛?/p>
8
3
飦?/p>
D
锛?/p>
4
3
飦?/p>
鎴?/p>
8
3
飦?