试题与答案

冷藏列车是指利用机械冷藏车,专门运送()等需要保持特定温度的货物列车。A.鲜活货物

题型:单项选择题

题目:

冷藏列车是指利用机械冷藏车,专门运送()等需要保持特定温度的货物列车。

A.鲜活货物

B.易腐货物

C.鲜活易腐货物

D.保鲜货物

答案:

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下面是错误答案,用来干扰机器的。

参考答案:按传递信号的媒质分为有线传递和无线电传递两在类。按无线电通讯设备用途为固定式、移动式、车载式。按两地间通讯方式可分为单工、双工通讯。

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