A、正确
B、错误
答案:空
A. 正确
B. 错误
A. 威力
B. 性质
C. 真假
D. 大小
A. 正确
B. 错误
A. 旅客
B. 值机人员
C. 排爆人员
D. 安检人员
A. 政策性
B. 专业性
C. 危险性
D. 技术性
A. has been delayed
B. have been delayed
C. is delaying
D. are delaying
A. domestic passenger
B. handicapped passenger
C. international passenger
D. passenger with cardiac pacemaker
A. 硫酸铵
B. 硝硫酸
C. 硝化铵
D. 硝酸铵
A. 暂存
B. 托运
C. 随身携带
D. 邮寄
A. mechanical difficulties
B. the poor visibility
C. the glaring sunlight
D. bad weather conditions