【单选题】火灾报警控制器具有接收各区域型控制器传递信息的功能()。
【判断题】( )交流电的有功功率是指瞬时功率在交流电一个周期内的平均值。
【单选题】According to the advertisement, Heaven Air believes it is ______.
A.
the second best in the world
B.
the second biggest in the world
C.
the biggest in the world
【单选题】----You failed again in the maths exam yesterday. ----Don’t tell Dad about it; if he knows that ,I’m dead.
【单选题】——Dad, please tell me when Mum_____. I miss her very much. ——She will return when she_____her task. And she will bring a nice present for you.
D.
will return;will finish
【简答题】The( )is the most important document for air cargo transportation.
【单选题】he explained , we understood .
【单选题】听力原文:M: Please pass me the salt. W: But mum, I'm washing clothes. My dad is free. What does the girl imply?
A.
She will pass the salt to her mother.
C.
Her father can do it for her mother.