提出“居经”“避年”的学者是()
A.王叔和·晋
B.朱端章·宋
C.王肯堂·明
D.万全·明
E.张仲景·汉
参考答案:A
The Tower of London, the St Paul's Cathedral and the Big Ben are major historical ______ of London. [ ]
A. sceneries
B. place
C. scenes
D. attractions
制动方向稳定性是什么?