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【单选题】
外反馈限压叶片泵，属于( )。A.
只能作定量泵
B.
只能作变量泵
C.
可做定量也可以作变量泵
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反馈参考答案：
举一反三
【多选题】What can passengers ask the airlines to do when the flight is delayed?
A.
change another airlines if other airlines are operating closer to schedule
B.
provide meals and refreshments
C.
hotel accommodations
D.
provide meal vouchers
【简答题】提出在科学文化领域里实行的方针是（）。
【单选题】There is not much the airlines can do when it comes to________．
A.
making sure the departure are not delayed
B.
the efficient handling of luggage
C.
speeding up customs procedure
D.
the improvement of the condition of waiting lounges
【单选题】—Hello, this is China Eastern Airlines. What can I do for you? —I’d like to two tickets to Beijing.
A.
take
B.
bring
C.
order
D.
book
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