—Who is your favorite teacher?

—Miss Wu. She is my Chinese teacher. I like her very much.

A．very

B．great

C．lots of

D．a lot

内燃机充量系数是指内燃机每循环实际吸入气缸的新鲜充量与以进气管内状态充满气缸工作容积的理论充量的比值。