扣件类型应与轨枕、钢轨及()类型相匹配。
参考答案:轨下胶垫
In relation to the law of contract:
(b) Explain the ways in which an offer may be revoked as provided under the Contracts Act 1950. (5 marks)
据资金时间价值的概念可知,(P/A,i,n)×()=1。
A.(A/P,i,n)
B.(F/A,i,n)
C.(P/F,i,n)
D.(A/F,i,n)