将10 g具有1个羟基的醇A跟乙酸在一定条件下反应，生成某酯17.6 g，并

将10 g具有1个羟基的醇A跟乙酸在一定条件下反应，生成某酯17.6 g，并回收了未反应的A 0.8 g。则醇A的相对分子质量为

A．146 B．114 C．92 D．46

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将10 g具有1个羟基的醇A跟乙酸在一定条件下反应，生成某酯17.6 g，并

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