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【单选题】
用NaOH固体配制一定物质的量浓度的NaOH溶液，下列操作中正确的是 [ ]A.
称量时，将固体NaOH直接放在天平右盘上
B.
将称量好的固体NaOH放入容量瓶中，加蒸馏水溶解
C.
将烧杯中溶解固体NaOH所得溶液，冷却到室温后转移至容量瓶中
D.
如果加水超过了刻度线，用胶头滴管直接吸出多余部分
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