下列细菌的繁殖期中,用于鉴定细菌的最好时期是
A.迟缓期
B.对数期
C.稳定期
D.衰退期
E.死亡期
参考答案:B
解析:细菌繁殖期中的对数期生物学性状最典型。
— We don't think we'll be able to go mountain-climbing tomorrow. '
— ______ the weather turns out fine? [ ]
A. How come
B. How about
C. What if
D. Why not
具有温养全身作用的气是()
A.元气
B.宗气
C.营气
D.卫气
E.经气