22
33
鑻忔暀鐗堜竷骞寸骇涓嬪唽鏈熶腑鑰冭瘯鏁板瀛﹁瘯棰?/p>
涓�銆侀�夋嫨棰橈紙姣忓皬棰?/p>
3
鍒嗭紝鍏?/p>
18
鍒?/p>
.
锛?/p>
1
锛?/p>
2
锕?/p>
1
绛変簬锛?/p>
锛?/p>
A
锛?/p>
2
B
锛?/p>
C
锛庯梗
2
D
锛庯梗
2
锛庝笅鍒楄繍绠楁纭殑鏄紙
锛?/p>
A
锛?/p>
a
+
a=a
2
B
锛?/p>
a
2
鈥
3
=a
6
C
锛?/p>
锛堬梗
2a
2
锛?/p>
2
=4a
4
D
锛?/p>
锛?/p>
a
锕?/p>
2
锛?/p>
2
=a
2
锕?/p>
4
3
锛庡鍥撅紝鎶婁竴鍧楀惈鏈?/p>
45掳
瑙掔殑鐩磋涓夎鏉跨殑涓や釜椤剁偣鏀惧湪鐩村昂鐨勫杈逛笂锛庡鏋溾垹
1=15掳
锛岄偅涔?/p>
鈭?/p>
2
鐨勫害鏁版槸锛?/p>
锛?/p>
A
锛?/p>
15掳
B
锛?/p>
25掳
C
锛?/p>
30掳
D
锛?/p>
35掳
4
锛?/p>
80
3
锕?/p>
80
鑳借锛?/p>
锛夋暣闄わ紟
A
锛?/p>
76
B
锛?/p>
78
C
锛?/p>
79
D
锛?/p>
82
5
锛庡鍥炬墍绀猴紝鍒嗗埆浠?/p>
n
杈瑰舰鐨勯《鐐逛负鍦嗗績锛屼互
1cm
涓哄崐寰勭敾鍦嗭紝鍒欏浘涓槾褰遍儴鍒嗙殑闈㈢Н涔?/p>
鍜屼负锛?/p>
锛?/p>
A
锛?/p>
蟺cm
2
B
锛?/p>
2蟺cm
2
C
锛?/p>
4蟺cm
2
D
锛?/p>
n蟺cm
2
6
锛庝簩鍏冧竴娆℃柟绋?/p>
2x
+
5y=32
鐨勬鏁存暟瑙ｆ湁锛?/p>
锛夌粍锛?/p>
A
锛?/p>
3
B
锛?/p>
4
C
锛?/p>
5
D
锛?/p>
6
浜屻�佸～绌洪锛堟瘡灏忛
3
鍒嗭紝鍏?/p>
30
鍒嗭級
7
锛庡凡鐭ユ煇绉嶆鐗╄姳绮夌殑鐩村緞涓?/p>
0.00035cm
锛屽皢鏁版嵁
0.00035
鐢ㄧ瀛﹁鏁版硶琛ㄧず涓?/p>
锛?/p>
8
锛庡垎瑙ｅ洜寮忥細
a
2
锕?/p>
ab=
锛?/p>
9
锛庣瓑鑵颁笁瑙掑舰鐨勪袱杈归暱鍒嗗埆鏄?/p>
3cm
鍜?/p>
6cm
锛屽垯瀹冪殑鍛ㄩ暱鏄?/p>
锛?/p>
10
锛庡凡鐭?
鏄簩鍏冧竴娆℃柟绋?/p>
kx
锕?/p>
y=3
鐨勪竴涓В锛岄偅涔?/p>
k
鐨勫�兼槸
锛?/p>
11
锛庤嫢浠ｆ暟寮?/p>
x
2
+
mx
+
9
锛?/p>
m
涓哄父鏁帮級鏄竴涓畬鍏ㄥ钩鏂瑰紡锛屽垯
m
鐨勫�间负
锛?/p>