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(3) Vision: Both eyes have not undergone any surgery, and the naked vision of any eye (according to the C-character visual acuity chart) is not less than 0.3, without color blindness, color weakness, strabismus, severe trachoma or trichiasis;10-15% of aquatic plants and hidden objects are planted shallowly at the edge of the pond to create an environment for lobsters to inhabit and shell and reduce mutual killing. The influence of water quality on lobster yield cannot be ignored. During the breeding process, the PH value of the pool water is kept between 7.5 and 8.5, and the transparency is 30-40cm. Fresh water should be added frequently, quicklime solution should be splashed regularly, water quality should be adjusted, and diseases and shelling failure should be prevented. 2. Feed feed reasonably. Lobsters will kill each other when hungry and under-fed, so the feeding amount must be sufficient. Lobster feed is animal and plant feed. Plant feeds are wheat, aquatic plants, rapeseed cakes, etc. Animal feeds are miscellaneous fish, miscellaneous meat, livestock viscera, etc. At ordinary times, the feeding time, feeding amount and feeding method are determined according to the habit of lobsters falling in the day and coming out at night and the density of lobsters in the pond. 3. Scientific fishing. Young shrimps can grow to commercial specifications in 60-90 days under the condition of suitable temperature and sufficient feed. The seedlings will be released in March and will be caught in rotation around June, selling large ones and keeping small ones.韩国推出的有关家庭，爱情的经典剧情片，展现了韩国的家庭故事更想到陈平和尹旭之间扶刘制项的计策来，所以范亚父相信了陈平之言。乡下少年，大多都是肤黑皮实劲健的，除非天生肤白。科林·沃尔科特在他的生日聚会上去世后，他的妻子苔丝和女儿凯特发现他有一个长期的情妇玛丽莲，还与她生了一个女儿凯瑟。一怒之下苔丝扔掉了丈夫科林的东西，而凯特也因男友马库斯发短信给另一个女孩而大发雷霆。当两个同父异母的姐妹相遇时，她们为该把父亲的骨灰撒在哪而发生争执，导致警方介入，同时他们也得知父亲可能和另一个女人有染。旁边有人轻声嗤笑道：年兄这话说的，便是中了状元，还要跨马游街呢，何况玄武王战功累累，封侯封王？再说，当年张家老小可是披枷戴锁被流放的，如今衣锦还乡。