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【单选题】The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the last 15 years, pilots have reported well over 100 in...
A.
is in favor of prohibiting passengers’ use of electronic devices completely
B.
has overestimated the danger of electromagnetic interference
C.
hasn’t formed his own opinion on this problem
D.
regards it as unreasonable to exercise a total ban during flight
【单选题】张老师在班上鼓励学生进行课外阅读，开展“分享知识"的活动，引导学生在班上分享收获，并对学生的分享及时加以点评。张老师的做法（ ）
A.
减轻了教师的教学负担
B.
拓展了学生的学习资源
C.
加重了学生的学习负担
D.
促进了教师的专业发展
【多选题】安全知识教育的内容主要是()。
A.
施工项目安全规章制度、安全技术操作规程
B.
施工生产流程;场内运输的有关安全知识
C.
有关施工用电的安全知识
D.
有关设备设施的安全知识
E.
有毒有害、民爆物品的有关安全知识