单项选择题

电压偏移是指输电线路或变压器两端电压的相量差。

A.正确
B.错误

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多项选择题

静电的危害有（）。 A.
导致磁盘读写错误，损坏磁头，引起计算机误动作 B.
造成电路击穿或者毁坏 C.
电击，影响工作人员身心健康 D.
吸附灰尘

单项选择题

According to the international Fisher Effect, if an investor purchases a five-year U.S. bond that has an annual interest rate of 5% rather than a comparable British bond that has an annual interest rate of 6%, then the investor must be expecting the at a rate of at least 1% per year over the next 5 years.
A、Britishpound; appreciate
B、Britishpound; revalue
C、U.S.dollar; appreciate
D、U.S.dollar; depreciate Answer: C