光伏电站电能质量检测装置应该安装在()。
A.光伏电站和并网点之间
B.逆变器和单元变之间
C.汇流箱与逆变器之间
D.电池组件与汇流箱之间
参考答案:A
衡量通货膨胀率的最常用物价指数是( )。
A.消费者物价指数(CPI)
B.生产者物价指数(PPI)
C.国内生产总值物价平减指数
D.国民生产总值物价平减指数
Traditionally,the signal for fire aboard ship is().
A.more than 6 short blasts and 1 long blast on the whistle,and the same signal on the general alarm
B.continuous sounding of the ship's whistle and the general alarm for at least 10 seconds
C.1 short blast on the whistle
D.alternating short and long blasts on the ship's whistle