理中丸的功用是（） ["温中补虚，降逆止呕","温中散寒，补气健脾","温中补虚，和里缓急","温经散寒，养血通脉","温中散寒，降逆止呕"]
试带法检测尿白细胞主要采用（） ["淋巴细胞酯酶法","单核细胞酯酶法","嗜碱粒细胞酯酶法","中性粒细胞酯酶法","嗜酸粒细胞酯酶法"]
下列不属于A群链球菌致热外毒素的致病特点的是（）。 ["致热作用","细胞毒作用","增加动物对内毒素的敏感性","抗原性弱","产生皮肤红疹"]
正常人血小板计数一天内的变化率可达（） ["10%","12%","15%","18%","20%"]
按照世界卫生组织的分类，精子活力参考值为：a级精子数大于（） ["10%","0.15%","20%","25%","30%"]
水渍险
