屋面防水等级Ⅱ级是指重要的建筑和高层建筑，防水层合理使用年限为15年，设防要求为二道防水设防。( )
参考答案：对
问卷调查时采取的方式是（）。
A、下属评
B、同事评
C、自评和他评
D、领导评
Why are payments NOT usually netted out in a currency swap()
A. There are no payments in a currency swap except at initiation and maturity.
B. The notional principal is not swapped at initiation.
C. The payments are denominated in two different currencies.
