A． passenger plane is able to carry a fixed weight, including passengers and fuel.Which wing design would be best for such a plane?

A．Design 1

B．Design 2

C．Design 3

D．Design 4

[单选题]表达式Fix（7.8）+Fix（-7.2）的结果是（）。A . -1B . 1C . 15D . 0

[单选题]表达式Fix(-3.25)和Fix(3.75)的结果分别是______。A．-3，3B．-4，3C．-3，4D．-4，4

[单选题]表达式Fix(-3.25)和Fix(3.75)的结果分别是( )。A．-3，3B．-4，3C．-3，4D．-4，4

[单选题]表达式Fix（-3.25）和Fix（3.75）的结果分别是（　　）。A.-3，3B.-4，3C.-3，4D.-4，4

[单选题]（ 31 ）表达式 Fix(-3.25) 和 Fix(3.75) 的结果分别是（ ） 。A． ） -3, 3B． ） -4, 3C． ） -3, 4D． ） -4, 4

[单选题]Most of the passenger have ( ),but not all of them have ( )A．carry-on baggageB．missing baggageC．checked baggageD．excess baggage

[单选题]Passenger should () and prepare their ().A．air-ticketB．boarding cardC．airport feeD．line up in order

[单选题][A] able better to[B] able to better[C] better to able[D] better able to

[单选题]It is advised that everything be packed into a carry-on most probably becau

[单选题]F．rankfort plane（ ）