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The sensitivity to be used can be selected according to the shooting scene.大头儿子的爷爷——老头爷爷是个老北京人，做得一手传统京味菜，把大头吃得赞不绝口。大头在幼儿园一番宣传，说自己每天的晚餐如何如何丰富，说得小朋友们馋涎欲滴。超市老板的儿子胖嘟嘟当晚被邀请到大头家，品尝了爷爷做的面条，差点儿连舌头都吞了下去。 但是胖嘟嘟的爸爸妈妈却在烦恼。小区旁边新建了一座大超市，物品全，价格低，而且离小区非常近，把胖嘟嘟家的小区超市挤得够呛，简直是门可罗雀。两口子烦心不已。[2] Modern pharmaceutical methods, such as:MDT meetings should be arranged during doctors' working hours;Thromboembolic diseases are currently one of the causes that endanger human health and lead to the highest mortality rate, such as myocardial infarction, cerebral thrombosis, deep vein thrombosis, cerebral embolism, pulmonary embolism, etc. In addition, thrombosis is an important pathological process involved in the pathogenesis of many diseases. 1. Anticoagulant therapy (1) Heparin: Heparin is a commonly used anticoagulant and is a highly sulfated glucosaminoglycan. Heparin is widely found in mammalian tissues, and mast cells are the main producing sites. The main sources of medicinal heparin are bovine lung and pig intestinal mucosa. Heparin used clinically is called unfraction heparin (UFH) because it is a mixture of components with different relative molecular weights. The relative molecular weight is between 33,000 and 30,000, which is also called standard heparin (SH). The drug name is heparin sodium. (2) Low molecular weight heparin: crude heparin is cracked into some fraction with relative molecular mass of 1000 ~ 12000 by chemical or enzymatic hydrolysis methods, and then purified. There are at least 10 kinds of low molecular weight heparin prepared by different manufacturers and different methods.