题目：
荧光探伤的操作步骤为（）。
A．清洗，渗透（含涂氧化镁粉），清洗，紫外灯下观察
B．清洗，渗透（含涂氧化镁粉），紫外灯下观察
C．渗透（含涂氧化镁粉），清洗，紫外灯下观察
D．清洗，紫外灯下观察
答案：
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参考答案：D
荧光探伤的操作步骤为（）。A．清洗，渗透（含涂氧化镁粉），清洗，紫外灯下观察 B．清
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