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【单选题】
下列对感受器电位的描述,正确的是A.
大小与刺激强度无关
B.
具有“全或无”的性质
C.
以电紧张的形式扩布
D.
呈不衰减传导
E.
不能总和
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A.
regulate the supply of money.
B.
make the best use of scarce resources to satisfy our unlimited wants.
C.
reduce the wants of individuals, businesses and government.
D.
find more resources to satisfy everyone's wants.
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