第9题: [单项选择]对电话员的疲劳程度测定应选择( )。 A. 分析脑电图 B. 精神测验 C. 测定闪频值 D. 连续拍摄人体动作的变化 参考答案:C 答案解析:对于工作期间精神一直处于高度紧张状态的工种(如电话员、机场调度员等)、视力高度紧张的工种以及枯燥无味单凋重复的工种,其工作前后的闪频值有不同程度的变化,一般可达0.5~6Hz。故可测定闪频值来判断一个
第18题: [填空题]A to ask for advice B to check arrangements C to make a suggestion D to give invitations E to ask for help F to make a request G to give apologies H to make an enquiry______________ 参考答案:H 答案解析:[听力原文] We are very interested in your office furniture. It seems to be of very good quality and d