污染热原的途径不包括有
A.溶剂B.原料C.容器及用具D.制备过程E.灭菌过程
参考答案:E
Lucy put a lot of _______ in _______ of tea. [ ]
A. sugar, the two cup
B. sugars, the two cups
C. sugar, the two cups
D. sugars, the cups
交叉口设计车速为15~20km/h的支路,其转角半径应为______m。
A.5~8 B.15~20C.15~25 D.25~30