—Is your aunt actress?
—Yes.She's great actress in China.
A:an;an
B:an;a
C:a;a
D:a;an
某种气球内充满了一定质量的气体,当温度不变时,气球内气体的气压P(kPa)是气体体积V(m3)的反比例函数,其图象如图所示.当气球内气体的气压大于150kPa时,气球将爆炸.为了安全,气体体积V应该是( )