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The policy mode is the packaging of the algorithm, which separates the responsibility of using the algorithm from the algorithm itself and delegates it to different objects. Policy patterns usually wrap a series of algorithms into a series of policy classes. To encapsulate the policy pattern in one sentence is to "encapsulate each algorithm into a different policy class so that they can be interchanged". The following is the structure diagram of the policy mode:正好丫头来请吃饭呢，于是便同爹娘一块往后院爷爷奶奶那里去吃早饭。该剧初步定于2015年夏 天播出。James Wolk扮演主人公Jackson Oz，一个年轻、叛逆的美国动物学家。当他在非洲的荒野之中旅行时，发现动物们表现出奇怪的攻击行为。很快，动物们的攻击行为变得更可怕、更狡猾、更有组 织，他怀疑这件事背后隐藏着一个巨大的阴谋。他必须尽快解开这种奇怪症状大流行的真正原因——否则人类很快将无处躲藏。Nora Arnezeder扮演法国调查员、前外交官Chloe Tousignant，久经世故，性格坚强，在非洲旅行时邂逅Oz。她对动物的反常行为颇感忧虑，于是向Oz寻求庇护。Nonso Anozie扮演博茨瓦纳旅行向导Abraham，对于野生动植物有着深刻的理解，对于人类自身的问题见解更深。Kristen Connolly扮演充满激情的年轻记者Jamie，决心查出动物行为异常的真正原因。她一直在跟踪调查，似乎很快就会有所发现。来自《革命》 （Revolution）的Billy Burke扮演正直坦白的大型动物兽医Mitch。他喜欢和动物打交道，喜欢和动物在一起的简单交流方式，讨厌人类之间尔虞我诈的复杂关系。"Er... I really can't remember the model, it's green, probably so thick." Wang Zeduan could not remember the specific model of the explosive cylinder, Just said the color and gesticulated the approximate size with his hand, Later, I looked up the information and learned that The detonators used at position 142 were all Type 68 detonators, This is also a classic explosive barrel widely used throughout the Sino-Vietnamese border war. This type of explosive cylinder is 60 centimeters long each, As long as there is a need, it can be spliced indefinitely. The charge for each section is 2.2 kg, According to Wang Zeduan's description, At that time, the explosive barrel was made up of three sections. Then the total charge is as high as 6.6 kg, However, the high explosive bomb used in the type 66 152 mm howitzer, The charge is 6 kg, In other words, The charge of these three explosive cylinders is 0.6 kg higher than that of a 152 mm grenade. This is also basically in line with his description that it is more powerful than a shell. In addition, after being inserted into the ground, the two sections of the upper half form a certain blast height from the ground, In this way, the explosive power can be better exerted virtually to cover a wider area, so it is indeed reasonable that an explosive barrel can successfully achieve the tactical purpose of successfully clearing position 142 for the second time (the first clearance is 66-type directional anti-infantry mines and 72-type pressure/tripping anti-infantry mines).然而睡狮之外，突然出现了一个狮崽子，这个崽子与他的父辈不同，虽然还未有父辈雄健的体魄，却拥有一颗远胜父辈的野心，他根本就不贪恋这棵大树下的阴凉，总是远眺整个草原。(未完待续……) show_style();。