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Understanding Factory Method Patterns: All Factory Method Patterns are used to create objects. The factory method pattern encapsulates the object creation process by letting subclasses decide what the created object is. The factory method pattern has the following roles:周夫子呵呵笑出声来，对周菡招招手道：菡儿，来跟爷爷说说，你为何要匆匆忙忙地走？说着，眼光不由自主地瞟向林聪，难道跟这林队长有关？林聪见他审视的目光，不禁汗颜：这事可跟她一点关系没有啊。1. Power determines the heating time;But in that case, Not even considering so many dangers, This performance of '74 spray' is of great use, I remember there were 4 '74 spray' on the position at that time, There are two recruits who operate them. Two veterans, Both veterans were squad leaders, All have the skills of air injection, Facing the big wasp descending from the pavement, The two of them were obviously forced to hurry, Take up the '74 spray' and aim at the position where the big wasp is relatively concentrated in the sky and spray it out. If it weren't for the critical situation at that time, the two squad leaders would definitely not have this kind of "dangerous operation", while the other two recruits watched the veterans take the lead and learned to do so. Although they had not received relevant training and the accuracy of spraying was not as good as that of veterans, they finally sprayed out and did not hurt themselves or other comrades in arms.2. If radar equipment is equipped and usable, it shall be used correctly, including long-distance scanning, in order to obtain early warning of collision risks, and radar plotting or equivalent systematic observation of detected objects.“成为魔法少女的时候，我是许了什么愿望来着？”1. Report Self-report Materials