【单选题】设随机变量X在区间(0,4)上均匀分布,则P(x>1.5)的值为
【单选题】过摄影中心S向像片平面做垂线,与像片面的交点为( )。
【简答题】A.at the back of the plane. B.in aisle seats. C.in window seats. D.near to the toilets.
【单选题】Passengers sitting ____________ are required to be over 18 years old and read the safety instruction card very carefully.A. in the window seats B. in the aisle seats C. next to the emer...
C.
next to the emergency exits