列一元一次方程解应用题的关键是找( ),从而列出方程。
相等关系
The pilot asked all the passengers on board to remain _________ as the plane was making a landing.
A.seat
B.seating
C.seated
D.to be seating
与区间“10~14”等价的是()
A.[5.14,5.9)
B.[9.5,14.5]
C.(5.14,5.9]
D.(9.5,14.5)