为自己加油

Spoiler panels are installed to supplement the ailerons for lateral control and to provide increased drag and reduced lift when used as speedbrake. 以下对扰流板作用的描述不正确的是

A.辅助飞行员对副翼进行横向操纵;
B.;增加阻力
C.减小升力;
D.产生附加升力;