RBS2000基站的两小区天线交叉接错后,()
A.基站有VSWR告警
B.掉话率高
C.小区间切换频繁
D.部分载波闭塞
参考答案:B, C
()是我国未来科学技术发展和文化建设的中坚力量。
A.工人
B.农民
C.知识分子
D.大学生
If the named port is one at which no tugs are ever obtainable,and the chartered vessel can not,by reason of her size,reach that port without the assistance of tugs,the port is().
A.safe
B.not safe
C.good
D.not good