【单选题】hydraulic type without key
【单选题】There is a direct flight at 20:00 in the afternoon or a flight at 9:30 in the morning that______ in Chicago.
【单选题】Is the flight a direct flight?
B.
No, it has a stopover.
【单选题】From larger stations that are not served by direct freight flight, the freight may be carried by ( ) that connect with a freight flight
【单选题】Why does the woman have to change her flight in Madrid?
A.
There's no direct flight.
B.
There's no seat available on direct flight.
C.
She wants to leave tomorrow morning.
D.
She will contact some people at Madrid.
【单选题】The key word in Paragraph 4 is ______.
【单选题】连续观测三次天体的罗方位取平均值后再求罗经差的目的是 。
【简答题】按照车门开启及结构形式主要分为( )和( )。