既能补气升阳又兼固表止汗、利水消肿,临床常用于抗病毒的药物是()
A.党参
B.黄芪
C.山药
D.白术
E.板蓝根
参考答案:B
They are all very clever, but _______of them could work the problem out.
A. any
B. some
C. none
D. neither
下列传输媒体中,哪种抗电磁干扰能力最好()
A.双绞线
B.IEEE802.5
C.光纤
D.以上都不是