The talk took place in the（）of a diplomatic observer. ["presence","light","honor","present"]
氧气瓶的颜色标志、瓶体应涂（）色。 ["白","天蓝","灰","黑","褐"]
“服务与员工保护”属于内在报酬。
（）I had the feeling that Tom was lying. ["Sometime","Somewhat","Somewhere","Somehow"]
为什么运行中高低加要保持一定的水位？
《供电营业规则》第四十七条规定：公用低压线路供电的，以（）为分界点，支持物属（）。
