2017
骞村北涓滅渷娴庡崡甯傚晢娌冲幙涓�冩暟瀛︿竴妯¤瘯鍗?/p>
涓�銆侀�夋嫨棰橈紙鏈鍏?/p>
10
涓皬棰橈紝姣忓皬棰?/p>
3
鍒嗭紝鍏?/p>
30
鍒嗭級
1
锛庝笅鍒楄绠楁纭殑鏄紙
锛?/p>
A
锛?
+
=
B
锛?/p>
x
6
梅
x
3
=x
2
C
锛?
=2
D
锛?/p>
a
2
锛堬梗
a
2
锛?/p>
=a
4
2
锛?/p>
PM2.5
鏄寚澶ф皵涓洿寰勨墹
0.0000025
绫崇殑棰楃矑鐗╋紝灏?/p>
0.0000025
鐢ㄧ瀛﹁鏁版硶琛ㄧず涓猴紙
锛?/p>
A
锛?/p>
2.5
脳
10
锕?/p>
7
B
锛?/p>
2.5
脳
10
锕?/p>
6
C
锛?/p>
25
脳
10
锕?/p>
7
D
锛?/p>
0.25
脳
10
锕?/p>
5
3
锛庢煇璇惧灏忕粍鐨勫悓瀛︿滑鍦ㄧぞ浼氬疄璺垫椿鍔ㄤ腑璋冩煡浜?/p>
20
鎴峰搴煇鏈堢殑鐢ㄧ數閲忥紝濡傝〃鎵�绀猴細
鐢ㄧ數閲忥紙搴︼級
120
140
160
180
200
鎴锋暟
2
3
6
7
2
鍒欒繖
20
鎴峰搴鏈堢敤鐢甸噺鐨勪紬鏁板拰涓綅鏁板垎鍒槸锛?/p>
锛?/p>
A
锛?/p>
180
锛?/p>
160 B
锛?/p>
160
锛?/p>
180 C
锛?/p>
160
锛?/p>
160 D
锛?/p>
180
锛?/p>
180
4
锛庡皢涓嬪垪鍥惧舰缁曞叾瀵硅绾跨殑浜ょ偣閫嗘椂閽堟棆杞?/p>
90掳锛屾墍寰楀浘褰竴瀹氫笌鍘熷浘褰㈤噸鍚堢殑鏄紙
锛?/p>
A
锛庡钩琛屽洓杈瑰舰
B
锛庣煩褰?/p>
C
锛庤彵褰?/p>
D
锛庢鏂瑰舰
5
锛庝竴涓瀛愪腑瑁呮湁
3
涓孩鐞冨拰
2
涓粍鐞冿紝杩欎簺鐞冪殑褰㈢姸銆佸ぇ灏忥紟璐ㄥ湴瀹屽叏鐩稿悓锛屽湪鐪嬩笉鍒扮悆鐨勬潯浠朵笅锛岄殢鏈轰粠琚?/p>
瀛愰噷鍚屾椂鎽稿嚭
2
涓悆锛屽叾涓?/p>
2
涓悆鐨勯鑹茬浉鍚岀殑姒傜巼鏄紙
锛?/p>
A
锛?/p>
B
锛?/p>
C
锛?/p>
D
锛?/p>
6
锛庝簩娆″嚱鏁?/p>
y=
锕?/p>
x
2
+1
鐨勫浘璞′笌
x
杞翠氦浜?/p>
A
銆?/p>
B
涓ょ偣锛屼笌
y
杞翠氦浜庣偣
C
锛屼笅鍒楄娉曢敊璇殑鏄紙
锛?/p>
A
锛庣偣
C
鐨勫潗鏍囨槸锛?/p>
0
锛?/p>
1
锛?/p>
B
锛庣嚎娈?/p>
AB
鐨勯暱涓?/p>
2
C
锛庘柍
ABC
鏄瓑鑵扮洿瑙掍笁瑙掑舰
D
锛庡綋
x
锛?/p>
0
鏃讹紝
y
闅?/p>
x
澧炲ぇ鑰屽澶?/p>
7
锛庡皬鐜叉瘡澶╅獞鑷杞︽垨姝ヨ涓婂锛屽ス涓婂鐨勮矾绋嬩负
2800
绫筹紝楠戣嚜琛岃溅鐨勫钩鍧囬�熷害鏄琛屽钩鍧囬�熷害鐨?/p>
4
鍊嶏紝楠戣嚜琛?/p>
杞︽瘮姝ヨ涓婂鏃╁埌
30
鍒嗛挓锛庤灏忕幉姝ヨ鐨勫钩鍧囬�熷害涓?/p>
x
绫?/p>
/
鍒嗭紝鏍规嵁棰樻剰锛屼笅闈㈠垪鍑虹殑鏂圭▼姝ｇ‘鐨勬槸锛?/p>
锛?/p>
A
锛?/p>
B
锛?/p>
C
锛?
D
锛?
8
锛庡叧浜?/p>
x
鐨勪竴鍏冧簩娆℃柟绋?/p>
kx
2
+3x
锕?/p>
1=0
鏈夊疄鏁版牴锛屽垯
k
鐨勫彇鍊艰寖鍥存槸锛?/p>
锛?/p>
A
锛?/p>
k
鈮わ梗
B
锛?/p>
k
鈮わ梗
涓?/p>
k
鈮?/p>
0
C
锛?/p>
k
鈮ワ梗
D
锛?/p>
k
鈮ワ梗
涓?/p>
k
鈮?/p>
0
9
锛庡鍥撅紝鈯?/p>
O
杩囩偣
B
銆?/p>
C
锛?/p>
鍦嗗績
O
鍦ㄧ瓑鑵扮洿瑙掍笁瑙掑舰
ABC
鐨勫唴閮紝
鈭?/p>
BAC
=90掳锛?/p>
OA=1
锛?/p>
BC=6
锛?/p>
鍒欌姍
O
鐨勫崐寰勪负锛?/p>
锛?/p>