安全门是锅炉（）的重要装置，安全门一般有两种，一种是（），一种是（）。
It was such a grand view that it（）strong emotion in us sight-seers. ["roused","rose","arose","aroused"]
GPS 3D导航可提供较为准确的定位服务，需要提供这种服务至少需要收到（）颗具有良好几何因子的卫星。 ["3","4","5","6"]
As he was the only person who has the key, Simon felt himself（）suspicion. ["under","in","beyond","upo"]
网络广告的正式诞生是在哪年（）。 ["1994","1996","1984","1986"]
钻探工作业前进行哪些安全确认？
