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The International Union of Railways is abbreviated as（）．

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Marine B(s)/L perform. a number of functions，which of the followings is not correct？（）

Logistical operations can be divided into three areas：market distribution，manufacturing support， and（）．

The FPA of marine cargo transportation insurance cover risks of（）．

《国际海运危险货物规则》中的第1大类危险货物是（）。