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命运从出生起就把李涛和张声联系在一起，当年张声的妈妈为了把李涛的妈妈送医院而自己早产，从小李父就让李涛多照顾张声。李涛对张声不厌其烦，但当他得知张声在网球班被人欺负了以后，学霸李涛拿起了网球拍帮张声打赢了卫畅的挑衅，网球班教练们力邀李涛进自己的网球队，在张声的软磨硬泡下，李涛却最终答应张声加入网球班，并在网球班一路挑战各级选手对手，李涛的网球惊人天赋引起了俱乐部经理管管及重量级选手赵霁的注意，管管开始接近李涛，张声内心失落。情人节到来，张声精心准备和李涛一起过节，却因意外而错过，而卫畅错把付萌萌当作张声而告白。而李涛被赵霁打败后心情低落缺席了俱乐部的训练，最终张声找到李涛帮李涛重振信心。见那一声炸响，吓得黑狗黄狗纷纷夹着尾巴汪汪叫着四散逃开，便得意地咧嘴大笑。讲述了一段90后富二代混进校园当老师，并与00后的鬼马学生们展开了一系列师生大PK的校园喜剧故事。Iterator patterns are created for collection objects, For collection objects, It must involve the addition and deletion of collection elements, and certainly supports the operation of traversing collection elements. If the traversal operation is also placed in the collection object at this time, the collection object will bear too many responsibilities. At this time, the responsibilities can be separated and the traversal of the collection can be placed in another object, which is the iterator object.　　第3集，广末凉子饰演人气服装品牌设计师，白石圣饰演原地下偶像，峰村理惠出演全职主妇，竹达彩奈出演护士。A low temperature stop valve, Unlike Example 1, Comprises a valve body 1 and a valve cover 2, A valve stem 3 is arrange in that valve body 1, One end of the valve stem 3 is provided with a valve disc 4, The other end of the valve stem 3 is provided with an adjusting handwheel 5, A low portion of that disc 4 is provided with a guide sleeve 6, The guide sleeve 6 is fixed by means of a connecting piece and a spring pad 8, Between that disc 4 and the guide sleeve 6 is provide a valve seat 7, Between that valve stem 3 and the valve cov 2 there is provided a packing assembly 9, An O-ring 10 is further dispose at that upper portion of the packing assembly 9, The upper part of the O-ring 10 is provided with a packing gland 11, the valve body 1 is provided with an arc-shaped end face 12, the arc-shaped end face 12 forms a line seal between the valve body 1 and the valve seat 7, the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41, the packing assembly 9 comprises a flexible graphite packing layer, the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity, and the two O-rings 10 are respectively arranged on the inner side and the outer side of the packing gland 11.For simple programs, it may be easier to write a simple algorithm than to introduce a design pattern.