掘进工作面辅助眼、掏槽眼、周边眼按照装药量由大到小的排列次序为：（）、（）、（）。
参考答案：掏槽眼、 辅助眼、 周边眼。
前期物业管理服务对象是( )。
A．建设单位
B．承建单位
C．全体业主
D．建设单位、物业产权人
What is TRUE when operating in fog and other vessels are detected by radar?（）
A.you should make an ample change to port for a vessel crossing on the starboard bow
B.You should maneuver in ample time if a close-quarters situation is developing
C.You should determine the course and speed of all radar contacts at six minutes intervals
D.Long-range scanning will provide early warning of all other vessels within the radar’s range
