问题：
[单选题]进行工时消耗研究时，（ ）是通过对工作时间消耗的记录进行分析来研究工时消耗的方法，它研究所有工种的工作时间消耗。
A、测时法
B、写实记录法
C、工作日记法
D、统计法
参考答案：
B
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