问题
单项选择题
根据下表数据，影响焊接质量总体水平的主要是（）。
A.作业工人A
B.作业工人B
C.作业工人C
D.全体作业工人
答案
参考答案：C
解析：通过分层调查表，可以明显看出是作业工人C影响了总体质量的水平。所以C正确。
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根据下表数据，影响焊接质量总体水平的主要是（）。
A.作业工人A
B.作业工人B
C.作业工人C
D.全体作业工人
参考答案：C
解析：通过分层调查表，可以明显看出是作业工人C影响了总体质量的水平。所以C正确。
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