卫星转发器C频段上下行线路的频率差为().
A.11300MHz
B.11250MHz
C.1750MHz
D.2225MHz
参考答案:D
患者,女,32岁,自汗,甚至动则汗出,宜首选()
A.麻黄根、浮小麦
B.山茱萸、熟地黄
C.乌梅、罂粟壳
D.肉豆蔻、赤石脂
E.五味子、诃子
William Sidney Porter, known as O. Henry, is most famous for()
A. his poems
B. his plays
C. his short stories
D. his novels