公共关系的本质属性是()
A. 联络公众
B. 树立形象
C. 影响舆论
D. 双向传播与沟通
How many flights will Voss have finished if his four-month mission starting in July 2000 ends up successfully?
A. Three
B. Two
C. Four
D. five
社区关系指()
A. 社会居民之间的关系
B. 组织与社区的行政隶属关系
C. 组织与社区之间的血缘关系
D. 组织与社区公众之间的沟通关系
The great significance of Voss's findings lies in______. Ⅰ. strengthening his determination to join in space flights Ⅱ. furthering his understanding of NASA Ⅲ. consolidating his astronaut status in NASA programs
A. I only
B. Ⅱ only
C. I, Ⅱ and Ⅲ all included
D. Ⅰ and Ⅱ only