Indian authorities have decided to remove the dry coconuts from trees near the building to ensure Mr Obama will not become the _________ of falling coconuts.[ ]

A. witness    

B. victim      

C. criminal      

D. consultant

燃机清吹的目的是吹掉可能漏进机组中的燃料气或因积油产生的油雾，避免爆燃。（）