309
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309
鏁欒偛璧勬簮搴?/p>
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绗竴閮ㄥ垎
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4
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涓囨湁寮曞姏涓庤埅澶?/p>
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1
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T
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m
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F
銆傚凡鐭?/p>
寮曞姏甯搁噺涓?/p>
G
銆傚垯涓嬪垪閿欒鐨勬槸
A
锛庤琛屾槦鐨勮川閲忎负
F
3
T
4
16
蟺
4
Gm
3
B
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4
蟺
2
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2
m
C
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3
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2
D
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2
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m
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mg
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4
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2
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2
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2
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B
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4
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4
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3
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2
4
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m
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A
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3
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C
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D
姝ｇ‘銆?/p>
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60
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A
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1/60
2
B
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1/60
2
C
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1/6
D
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1/60
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r
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ma
锛?/p>
鍗冲姞閫熷害
a
涓庤窛绂?/p>
r
鐨勫钩鏂规垚鍙嶆瘮锛?/p>
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B
姝ｇ‘锛屽叾浣欓�夐」閿欒銆?/p>
绛旀
B
3
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1
锛?/p>
4
锛?/p>
8
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