需置棕色瓶中贮藏的滴定液有()。
A.乙二胺四醋酸二钠滴定液
B.亚硝酸钠滴定液
C.高氯酸滴定液
D.硫代硫酸钠滴定液
E.盐酸滴定液
参考答案:B, C
采集湖泊和水库的水样后,在样品的运输、固定和保存过程中应注意哪些事项?
In relation to the law of contract:
(a) explain and distinguish between express and implied terms; and (3 marks)