下列哪项不是开跳频的作用()
A.克服多径衰落
B.提高通话质量
C.使系统可以用更紧密的频率复用方案
D.省电
参考答案:D
诊断子宫内膜癌的主要辅助检查是()
A.B型超声检查
B.宫腔镜检查
C.分段刮宫病理检查
D.宫颈涂片细胞学检查
E.宫腔吸出液或毛刷细胞学检查
With the shining water before you and the wind, ______ trees behind you, you can not help ______.
A. blown hut feel relaxed B. blowing feeling relaxedC. blown but feel relaxing D. blowing but feel relaxing