鑲囧簡甯?/p>
2020
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鏁板璇曢
璇存槑锛氬叏鍗峰叡
4
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100
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120
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l 0
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3
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30
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4
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1
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1
2
鐨勫�掓暟鏄?/p>
A
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2
B
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2
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C
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1
2
D
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1
2
飥?/p>
2
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4
405
10
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B
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5
40.5
10
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C
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6
4.05
10
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D
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7
4.05
10
飩?/p>
3
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1
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4
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2
2
4
x
y
x
y
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飥?/p>
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飪?/p>
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A
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1
2
x
y
飥?/p>
飪?/p>
飪?/p>
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3
1
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C
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2
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5
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m
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C
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E
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B
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D
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F
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AC=4
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CE=6
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BD=3
锛屽垯
BF=
A
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7 B
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7.5 C . 8 D
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8.5
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(
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1) B
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(2
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1
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) D (1
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