2018
骞村畨搴嗗競涓�冩ā鎷熻�冭瘯
鏁板璇曢
鍙傝�冪瓟妗堝強璇勫垎鏍囧噯
涓�銆侀�夋嫨棰橈紙鏈ぇ棰樺叡
10
灏忛锛屾瘡灏忛
4
鍒嗭紝婊″垎
40
鍒嗭級
1
.
銆愯�冪偣銆戝疄鏁扮殑澶у皬姣旇緝
.
銆愯В鏋愩�戝洜涓?/p>
-2<-1< 0 <2.5
锛屾墍浠ラ�?/p>
D.
2
.
銆愯�冪偣銆戠瀛﹁鏁版硶
.
銆愯В鏋愩�戞牴鎹瀛﹁鏁版硶鐨勫畾涔夊彲鐭ワ細
683.5
浜?/p>
=
6.835
脳10
10
鎵�浠ラ�?/p>
C.
3
.
銆愯�冪偣銆戞牴寮忚繍绠楋紝鏁村紡杩愮畻
.
銆愯В鏋愩�?/p>
A
.
缁濆鍊煎簲涓洪潪璐熸暟銆傛纭负
蟺
-3.
B
.
瀹屽叏骞虫柟鏈変笁椤癸紝灏戜簡
+
2ab
椤?/p>
.
C
.
骞傜殑涔樻柟锛屽簳鏁颁笉鍙橈紝鎸囨暟鐩镐箻搴斾负
6
a
.
鎵�浠ラ�?/p>
D.
4
.
銆愯�冪偣銆戜笁瑙嗗浘鐨勭浉鍏崇煡璇?/p>
.
銆愯В鏋愩�戞牴鎹笁瑙嗗浘鐨勭壒寰侊紝涓嶇浠庝富瑙嗗浘锛屼刊瑙嗗浘杩樻槸宸﹁鍥剧湅涓夋１鏌遍兘涓嶄細鏄钩琛?
鍥涜竟褰紝鏁呭簲閫?/p>
B.
5
.
銆愯�冪偣銆戞暟鐨勭壒鎬у強鏁扮殑寮�骞虫柟
.
銆愯В鏋愩�?/p>
48=3脳
4
2
锛?/p>
48n
鑳藉紑骞虫柟鏈�灏忓彧瑕佷箻浠?/p>
3
鍗冲彲锛屾晠搴旈�?/p>
A.
6
.
銆愯�冪偣銆戝钩鍧囧闀跨巼闂锛屽垪涓�鍏冧簩娆℃柟绋嬭В搴旂敤棰?/p>
.
銆愯В鏋愩�戝洜涓ゅ勾鐨勫闀跨巼鐩稿悓锛屾晠搴旈�?/p>
C
.
7
.
銆愯�冪偣銆戝弽姣斾緥鍑芥暟鐨勭浉鍏崇煡璇?/p>
.
銆愯В鏋愩�?/p>
A
.
褰?/p>
x=-2
鏃讹紝
y=-1
锛屾纭?/p>
.
B
.
鍥犱负
k=2>0
,
鍑芥暟缁忚繃涓�銆佷笁璞￠檺锛屾纭?/p>
.
C
.
鍥犱负
k=2>0
锛屽湪姣忎釜璞￠檺鍐?/p>
y
闅?/p>
x
鐨勫澶ц�屽噺灏忥紝閿欒
.
C
.
姝ｇ‘
.
8
.
銆愯�冪偣銆戞娊鏍疯皟鏌ワ紝缁熻鍥撅紝鐢ㄦ牱鏈及璁℃�讳綋
.
銆愯В鏋愩�戝叏鏍♀�滀娇鐢ㄧ數瀛愰灜鐐�濈殑瀛︾敓鏈夛細
15
梅
100脳
3000=450
.
鏁呭簲閫?/p>
D
.
9
.
銆愯�冪偣銆戝钩琛屽洓杈瑰舰涓�椤剁偣鍜屽杈逛腑鐐圭殑杩炵嚎涓�瀹氫笁绛夊垎骞宠鍥涜竟褰㈢殑涓�瀵硅绾夸笌涓嚎
鐨勬�ц川瀹氱悊
.
銆愯В鏋愩�戠敱棰樻剰鍙緱锛?/p>
M
銆?/p>
N
涓虹嚎娈?/p>
BD
鐨勪笁绛夊垎鐐癸紝
鈭?/p>
S
鈻?/p>
AMN
=
3
1
S
鈻?/p>
ABD
锛?/p>
S
鈻?/p>
CMN
=
3
1
S
鈻?/p>
CBD
锛屸埓
S
鍥涜竟褰?/p>
AMCN
=
3
1
S
鈻?/p>
ABCD
.
鏁呭簲閫?/p>
B.
棰樺彿
1
2
3
4
5
6
7
8
9
10
绛旀
D
C
D
B
A
C
C
D
B
A