冻疮的主要致病因素是指()
A.寒邪外袭,耗伤阳气
B.气血衰弱,寒邪侵袭
C.元气虚弱,不耐其寒
D.命门火衰,阳气不足
E.肾阳虚损,阴盛及阳
参考答案:B
制动器制动力距不足有哪些原因?
. It’s true that he did write some excellent poems, but he is ______ known as a playwright.
A.more
B.rather
C.better
D.much