一般对花、茎、全草类药材为主的浸泡时间为()
A.10~20分钟
B.20~30分钟
C.30~40分钟
D.40~50分钟
E.50~60分钟
参考答案:B
Again and again the doctor the crying girl, but he couldn’t find out what was wrong with her.[ ]
A. looked over
B. looked after
C. looked for
D. looked out
汽温调节可分为()调节和()调节两种途径。