2019-2020
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璇﹁В
涓�銆侀�夋嫨棰?/p>
(
姣忓皬棰?/p>
3
鍒嗭紝鍏?/p>
27
鍒?/p>
)
1
锛?2017路鍏板窞
)
宸茬煡
2x
锛?/p>
3y(y>0)
锛屽垯涓嬮潰缁撹鎴愮珛鐨勬槸
(
A
)
A
.
x
y
锛?/p>
3
2
B
.
x
3
锛?/p>
2
y
C
.
x
y
锛?/p>
2
3
D
.
x
2
锛?/p>
y
3
2
锛?2017路閲嶅簡
B
)
宸茬煡鈻矨BC鈭解柍DEF锛屼笖鐩镐技姣斾负
1
鈭?/p>
2
锛屽垯鈻矨BC
涓庘柍DEF
鐨勯潰绉瘮涓?/p>
(
A
)
A
锛?/p>
1
鈭?/p>
4
B
锛?/p>
4
鈭?/p>
1
C
锛?/p>
1
鈭?/p>
2
D
锛?/p>
2
鈭?/p>
1
3
锛?2017路鏉窞
)
濡傚浘锛屽湪鈻矨BC
涓紝鐐?/p>
D
锛?/p>
E
鍒嗗埆鍦ㄨ竟
AB
锛?/p>
AC
涓婏紝
DE
鈭?/p>
BC
锛岃嫢
BD
锛?/p>
2AD
锛屽垯
(
B
)
A
.
AD
AB
锛?/p>
1
2
B
.
AE
EC
锛?/p>
1
2
C
.
AD
EC
锛?/p>
1
2
D
.
DE
BC
锛?/p>
1
2
绗?/p>
3
棰樺浘