问题
单项选择题
远端机光模块发光功率的正常范围（）。
A、3±1W
B、1±1W
C、2±2W
D、2±1W
答案
参考答案：C
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远端机光模块发光功率的正常范围（）。
A、3±1W
B、1±1W
C、2±2W
D、2±1W
参考答案：C
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