红外线气体分析器气室窗口上的晶片,可用()进行浸泡、擦洗。
A、丙酮
B、镜头纸
C、无水乙醇
D、绸布
参考答案:A, B, C, D
To make members of a team perform better, the trainer first of all has to know their__________
and weaknesses. [ ]
A. strengths
B. benefits
C. techniques
D. values
煮沸法灭活HIV需多长时间?