A plane traveled k miles in the first 96 minutes of flight time. If it completed the remaining 300 miles of the trip in t minutes, what was its average speed, in miles per hour, for the entire trip ？（）

A.A

B.B

C.C

D.D

E.E

螺杆式压缩机的工作过程由（）过程组成。

A、吸气、排气

B、吸气、压缩、排气

C、吸气、压缩、膨胀、排气

D、吸气、膨胀、排气