涓板彴鍖?/p>
2015-2016
瀛﹀勾搴︾涓�瀛︽湡鏈熸湯缁冧範
鍒濅笁鏁板
瀛︽牎濮撳悕鑰冨彿
涓�銆侀�夋嫨棰橈紙鏈鍏?/p>
30
鍒嗭紝姣忓皬棰?/p>
3
鍒嗭紝
锛?/p>
涓嬪垪鍚勯鍧囨湁鍥涗釜閫夐」锛屽叾涓彧鏈変竴涓?/p>
锛庯紟
鏄鍚堥鎰忕殑锛?/p>
1
锛庡鍥撅紝鍦?/p>
Rt
鈻?/p>
ABC
涓紝鈭?/p>
C
=90掳
锛?/p>
BC
锛?/p>
3
锛?/p>
AB
=4
锛屽垯
cos
B
鐨勫�兼槸
A
锛?/p>
3
7
B
锛?/p>
4
7
C
锛?
4
3
D
锛?
3
4
2
锛庡鍥撅紝鍦ㄢ柍
ABC
涓紝鐐?/p>
D
銆?/p>
E
鍒嗗埆鍦?/p>
AB
銆?/p>
AC
杈逛笂锛屼笖
DE
鈭?/p>
BC
锛屽鏋?/p>
AD
鈭?/p>
DB
=3
鈭?/p>
2
锛?/p>
閭ｄ箞
AE
鈭?/p>
AC
绛変簬
A
锛?/p>
3
鈭?/p>
2
B
锛?/p>
3
鈭?/p>
1
C
锛?/p>
2
鈭?/p>
3
D
锛?/p>
3
鈭?/p>
5
3
锛庘姍
O
鐨勫崐寰勪负
3cm
锛屽鏋滃渾蹇?/p>
O
鍒扮洿绾?/p>
l
鐨勮窛绂讳负
d
锛屼笖
d
=5cm
锛岄偅涔堚姍
O
鍜岀洿绾?/p>
l
鐨勪綅缃叧绯绘槸
A
锛庣浉浜?/p>
B
锛庣浉鍒?/p>
C
锛庣浉绂?/p>
D
锛庝笉纭畾
4
锛庢姏鐗╃嚎
3
)
2
(
2
飥?/p>
飥?/p>
飥?/p>
x
y
鐨勯《鐐瑰潗鏍囨槸锛堬級
A
锛?/p>
锛?/p>
2
锛?/p>
3
锛?/p>
B
锛?/p>
锛堬紞
2
锛?/p>
3
锛?/p>
C
锛?/p>
锛?/p>
2
锛岋紞
3
锛?/p>
D
锛?/p>
锛堬紞
2
锛岋紞
3
锛?/p>
5
锛庡鏋?/p>
ABC
DEF
鈻?/p>
鈭解柍
锛岀浉浼兼瘮涓?/p>
2
鈭?/p>
1
锛屼笖鈻?/p>
DEF
鐨勯潰绉负
4
锛岄偅涔堚柍
ABC
鐨勯潰绉负
A
锛?/p>
1B
锛?/p>
4C
锛?/p>
8
D
锛?/p>
16
6.
濡傚浘锛屽洓杈瑰舰
ABCD
鍐呮帴浜庘姍
O
锛屸垹
BCD
=120
掳锛屽垯鈭?/p>
BAD
鐨勫害鏁版槸
A
锛?/p>
30
掳
B
锛?/p>
60
掳
C
锛?/p>
80
掳
D
锛?/p>
120
掳
7
锛庡浜庡弽姣斾緥鍑芥暟
2
y
x
飥?
锛屼笅鍒楄娉曟纭殑鏄?/p>
A
锛庡浘璞＄粡杩囩偣锛?/p>
2
锛?/p>
-
1
锛?/p>
B
锛庡浘璞′綅浜庣浜屻�佸洓璞￠檺
C
锛庡綋
x
<0
鏃讹紝
y
闅?/p>
x
鐨勫澶ц�屽噺灏?/p>
D
锛庡綋
x
>0
鏃讹紝
y
闅?/p>
x
鐨勫澶ц�屽澶?/p>
8
锛庡鍥撅紝涓轰簡娴嬮噺鏌愭５鏍戠殑楂樺害锛屽皬鏄庣敤闀夸负
2m
鐨勭绔夸綔娴嬮噺宸ュ叿锛岀Щ鍔ㄧ绔匡紝浣跨绔块《绔殑褰卞瓙涓庢爲
鐨勯《绔殑褰卞瓙鎭板ソ钀藉湪鍦伴潰鐨勫悓涓�鐐癸紟姝ゆ椂绔圭涓庤繖涓�鐐圭浉璺?/p>
5m
锛屼笌鏍戠浉璺?/p>
10m
锛屽垯鏍戠殑楂樺害涓?/p>
A. 5m
B. 6m
C. 7m
D.8m
鑰?/p>
鐢?/p>
椤?/p>
鐭?/p>
1
锛庢湰璇曞嵎鍏?/p>
7
椤碉紝鍏变簲閬撳ぇ棰橈紝
26
閬撳皬棰橈紝婊″垎
120
鍒嗐�傝�冭瘯鏃堕棿
120
鍒嗛挓銆?/p>
2
锛庡湪璇曞嵎鍜岀瓟棰樺崱涓婂噯纭～鍐欏鏍″悕绉般�佸鍚嶅拰鍑嗚�冭瘉鍙枫�?/p>
3
锛庤瘯棰樼瓟妗堜竴寰嬪～娑傛垨涔﹀啓鍦ㄧ瓟棰樺崱涓婏紝鍦ㄨ瘯鍗蜂笂浣滅瓟鏃犳晥銆?/p>
4
锛庡湪绛旈鍗′笂锛岄�夋嫨棰樸�佷綔鍥鹃鐢?/p>
2B
閾呯瑪浣滅瓟锛屽叾浠栬瘯棰樼敤榛戣壊瀛楄抗绛惧瓧绗斾綔绛斻�?/p>
5
锛庤�冭瘯缁撴潫锛屽皢鏈瘯鍗枫�佺瓟棰樺崱鍜岃崏绋跨焊涓�骞朵氦鍥炪�?/p>
A
B
C
E
D
C
B
A
B
A
D
O
C