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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 航海英文函电 > 船舶检验报告

单项选择题

The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.

A.film speed
B.penetrometer
C.exposure reading
D.time of exposure

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