1
涓冨勾绾э紙涓嬶級鏈熶腑鏁板璇曞嵎
涓�銆侀�夋嫨棰橈紙鍏?/p>
10
灏忛锛屾瘡灏忛
3
鍒嗭紝婊″垎
30
鍒嗭級
1
锛庡鏋滀竴涓鏄?/p>
50掳锛岄偅涔堝畠鐨勪綑瑙掔殑搴︽暟鏄紙
锛?/p>
A
锛?0掳
B
锛?0掳
C
锛?00掳
D
锛?30掳
2
锛庝笅鍒楄繍绠椾腑锛屾纭殑鏄紙
锛?/p>
A
锛?/p>
x
3
+x
3
=2x
6
B
锛?/p>
x
2
鈥
3
=x
6
C
锛?/p>
x
18
梅
x
3
=x
6
D
锛庯紙
x
2
锛?/p>
3
=x
6
3
锛庡皢
0.00000573
鐢ㄧ瀛﹁鏁版硶琛ㄧず涓猴紙
锛?/p>
A
锛?/p>
0.573
脳
10
锕?/p>
5
B
锛?/p>
5.73
脳
10
锕?/p>
5
C
锛?/p>
5.73
脳
10
锕?/p>
6
D
锛?/p>
0.573
脳
10
锕?/p>
6
4
锛庝笅鍒楀悇寮忎腑锛岃兘鐢ㄥ钩鏂瑰樊鍏紡杩涜璁＄畻鐨勬槸锛?/p>
锛?/p>
A
锛庯紙锕?/p>
x
锕?/p>
y
锛夛紙
x+y
锛?/p>
B
锛庯紙
2x
锕?/p>
y
锛夛紙
y
锕?/p>
2x
锛?/p>
C
锛庯紙
1
锕?/p>
x
锛夛紙锕?/p>
1
锕?/p>
x
锛?/p>
D
锛庯紙
3x+y
锛夛紙
x
锕?
3y
锛?/p>
5
锛庡鍥撅紝涓嬪垪鑳藉垽瀹?/p>
AB
鈭?/p>
CD
鐨勬潯浠舵湁锛?/p>
锛変釜
锛?/p>
1
锛夆垹
1=
鈭?/p>
2
锛?/p>
2
锛夆垹
3=
鈭?/p>
4
锛?/p>
3
锛夆垹
B=
鈭?/p>
5
锛?/p>
4
锛夆垹
B+
鈭燘CD=180掳锛?/p>
A
锛?/p>
1
B
锛?/p>
2
C
锛?/p>
3
D
锛?/p>
4
6
锛庤嫢鍏充簬
x
鐨勪簩娆′笁椤瑰紡
x
2
锕?/p>
ax+36
鏄竴涓畬鍏ㄥ钩鏂瑰紡锛岄偅涔?/p>
a
鐨勫�兼槸锛?/p>
锛?/p>
A
锛?/p>
12
B
锛幝?/p>
12 C
锛?/p>
6
D
锛幝?/p>
6
7
锛庡鍥撅紝宸茬煡鐩寸嚎
a
锛?/p>
b
琚洿绾?/p>
c
鎵�鎴紝鑻?/p>
a
鈭?/p>
b
锛屸垹1=110掳锛屸垹2=40掳锛屽垯鈭?/p>
3=
锛?/p>
锛?/p>
A
锛?0掳
B
锛?0掳
C
锛?0掳
D
锛?0掳
8
锛庤嫢锛?/p>
x
锕?/p>
3
锛夛紙
x+5
锛?/p>
=x
2
+ax+b
锛屽垯
a+b
鐨勫�兼槸锛?/p>
锛?/p>
A
锛庯梗
13
B
锛?/p>
13
C
锛?/p>
2
D
锛庯梗
15
9
锛?/p>
涓�涓渾鏌辩殑搴曢潰鍗婂緞涓?/p>
Rcm
锛?/p>
楂樹负
8cm
锛?/p>
鑻ュ畠鐨勯珮涓嶅彉锛?/p>
灏嗗簳闈㈠崐寰勫鍔犱簡
2cm
锛?/p>
浣撶Н鐩稿簲澧炲姞浜?/p>
192蟺cm锛?/p>
鍒?/p>
R=
锛?/p>
锛?/p>
A
锛?/p>
4cm B
锛?/p>
5cm
C
锛?/p>
6cm
D
锛?/p>
7cm
10
锛庢煇鏄熸湡澶╁皬鏉庢琛屽彇鍥句功棣嗙湅涔︼紝閫斾腑閬囧埌涓�涓孩鐏紝鍋滀笅鏉ヨ�借浜嗗嚑鍒嗛挓锛屼负浜嗚刀鏃堕棿锛屼粬浠ユ洿
蹇�熷害姝ヨ鍒板浘涔﹂锛屼笅闈㈠嚑骞呭浘鏄琛岃矾绋?/p>
s
锛堢背锛変笌琛岃繘鏃堕棿
t
锛堝垎锛夌殑鍏崇郴鐨勭ず鎰忓浘锛屼綘璁や负姝ｇ‘
鐨勬槸锛?/p>
锛?/p>
A
锛?/p>
B
锛?/p>
C
锛?/p>
D
锛?/p>
浜屻�佸～绌洪锛堝叡
5
灏忛锛屾瘡灏忛
3
鍒嗭紝婊″垎
15
鍒嗭級
11
锛庤嫢闀挎柟褰㈢殑闈㈢Н鏄?/p>
3a
2
+2ab+3a
锛岄暱涓?/p>
3a
锛屽垯瀹冪殑瀹戒负
锛?/p>
12
锛庤嫢
5
m
=3
锛?/p>
5
n
=2
锛屽垯
5
2m+n
=
锛?/p>