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[
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A .加法结合律 |
B .乘法交换律 |
|
C .乘法分配律 |
D .乘法结合律 |
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[
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A . |
B . |
|
C . |
D . |
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[
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A . |
B . |
|
C . |
D . |
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[
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A . |
B . |
|
C . |
D . |
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[
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A . |
B . |
|
C . |
D . |
(
[
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A .15 |
B . |
|
C .11 |
D .4 |