What is meant by spotting the boom?（）<br>A:Lowering it into a cradle<br>B:Placing it in a desired position<br>C:Spotting it with wash primer and red lead<br>D:Two-blocking it

What is meant by spotting the boom?（）
A:Lowering it into a cradle
B:Placing it in a desired position
C:Spotting it with wash primer and red lead
D:Two-blocking it

出自：海船船员证

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