______ is recognized as the national flag-carrier.
A. The private airline
B. The public airline
C. The chartered airline
D. jet airline
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I _____ the party much more if there hadn’t been quite such a crowd of people there.
A. would enjoy
B. will have enjoyed
C. could have enjoyed
D. will be enjoying
伺服电动机在自动控制系统中作用是（）
A. 反馈元件
B. 放大元件
C. 执行元件
In Europe _______ are the two leading contenders for a global reservations system.
A. SABRE and GALILEO
B. GALILEO and APOLLO
C. GALILEO and AMADEUS
D. APOLLO and AMADEUS
Which of the following is not an international visitor（）
A crew member of a foreign vessel or aircraft stopped in the country on a lay-over.
B. An employee of international bodies on a mission lasting less than one year,or a national returning home for a temporary.
C. One who visits in the capacity of a diplomat or a member of the armed forces.
D. A foreign commercial or business traveler.
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