A . 0.01~0.02秒,0.02~0.04秒B . 0.01~0.02秒,0.02~0.05秒C . 0.01~0.04秒,0.02~0.06秒D . 0.01~0.05秒,0.02~0.04秒E . 0.01~O.15秒,0.02~0.04秒
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