单项选择题
用万用表测压电压时，应与被测电路（）
未知题型 The nominal interest rate is 3 percent and the inflation rate is 2 percent. What is the real interest rate? ( )
未知题型 It"s expected to get 33 of the 63 seats in 29 .
单项选择题 R32冷媒空调引起燃烧的要素有（）
