【单选题】25 / 34若通道净宽取0.76 m0.76\,\mathrm{m}0.76m,双侧通道合计为?A1.52 m1.52\,\mathrm{m}1.52m正确B0.76 m0.76\,\mathrm{m}0.76mC3.04 m3.04\,\mathrm{m}3.04mD0.38 m0.38\,\mathrm{m}0.38m参考答案A参考解析0.76×2=1.52 m0.76\times 2=1.52\,\mathrm{m}0.76×2=1.52m。