问题:半抗原:只有抗原性而无免疫原性的物质,其可与抗体或致敏淋巴细胞特异性结合,但不能单独诱发免疫应答。...
Friday, January 17, 2025
问题:实验室发生的()均需要到发证机关办理变更手续。A、检测标准变更B、授权签字人变更C、组织变更D、名称变更E、员工人数变更...
Tuesday, October 18, 2022
问题:减少偶然误差的方法适当增加测定次数,取算术平均值表示分析结果。...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:原子吸收分析仪器中狭缝宽度选择越大信噪比越()。...
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022
Tuesday, September 13, 2022
问题:实验室危险药品应分类贮藏,下面试剂储藏正确的是()。A、高氯酸、氯酸钾放置于砂箱中B、乙醇、乙醚、苯等贮放于密闭柜中C、高氯酸、双氧水、乙醚、乙醇混放D、氯酸钾与磷和苯混放...
Wednesday, February 8, 2023
问题:大肠菌在一定培养条件下能发酵葡萄糖、产酸产气的需氧和兼性厌氧革兰氏阴性无芽胞杆菌...
Friday, June 23, 2023
问题:H2S、KCN、尿素培养基培养物中,只要有()为阳性,则可判定该...
Tuesday, September 13, 2022
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022
问题:以下培养基可以高压灭菌处理的有()。A、SC增菌液B、PALCAM培养基C、B-P培养基D、XLD培养基...
Saturday, October 21, 2023
Monday, September 12, 2022
问题:作为基准物质应具备的条件()。A、纯度高B、组成与化学式相符C、性质稳定D、最好是摩尔质量较大...
Monday, February 3, 2025
Monday, September 12, 2022