——We are informed that the Weifang International Kite Festival starts at 7:00.

——Oh, I didn’t expect it was so early! I ____ to go out for dinner with my friends first.

A．was planning

B．am planning

C．have been planning

D．have planned

调压器喷嘴间隙的改变，控制着油量和（）。

A.错油门活塞下油压

B.错油门活塞上油压

C.错油门滑阀上油压

D.错油门滑阀下油压