老年人用下述哪类药物时剂量应增加（） ["巴比妥类","阿托品","吸入麻醉剂","麻醉性镇痛药","β-肾上腺素能兴奋药"]
免疫荧光染色后应在哪种显微镜下观察结果？（） ["偏光显微镜","体视显微镜","相差显微镜","荧光显微镜","普通光学显微镜"]
大量蛋白尿是指从尿中排泄蛋白质（）。 ["＞2.0mg/d","＞100mg/d","＞1.0g/d","＞150mg/d","＞3.5mg/d"]
以下有关烤瓷用镍铬合金性能，描述错误的是（）。 ["A.其强度和硬度均高于金合金","B.密度小","C.容易产生形变","D.与烤瓷的结合力低于金合金","E.镍的含量为70％"]
SPA与免疫球蛋白有较强亲和力的部位是（）。 ["重链","Fab段","F（ab’）2段","Fc段","轻链"]
启动系的作用？
