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【单选题】
使设备年等额总成本最低的那个使用期限是设备的（）。A.
经济寿命
B.
折旧寿命
C.
技术寿命
D.
自然寿命
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
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【单选题】听力原文：W: Can you tell me the least expensive way to get to New York City? M: If you go by bus it' s only $ 25. But if you go by train, it's almost twice that much. What does this man explain to the wom...
A.
The bus is cheaper than the train.
B.
The train is faster than the bus.
C.
There are two buses every day.
D.
The train is cheaper than the bus.
【单选题】听力原文：W: Can you tell me the cheapest way to get to California? M: If you go by bus, it is only ＄60. But if you go by train, it is almost twice that much. What does the man mean?
A.
The train is cheaper than the bus.
B.
The bus is cheaper than the train.
C.
There are two buses every day.
D.
The train is faster than the bus.
【单选题】下面有关多黏菌素的描述正确的是（）
A.
仅对繁殖期的细菌有作用
B.
对铜绿假单胞菌具有强大的杀菌作用
C.
毒性较小
D.
代谢后经肾脏排出
E.
仅对G菌感染有作用
【单选题】听力原文：W: Can you tell me the least expensive way to get to California? M: If you go by bus, it's only ＄30. But if you go by train, it's almost twice that much. What does the man explain to the woman?
A.
The train is cheaper than the bus.
B.
The bus is cheaper than the train.
C.
There are two buses every day.
D.
The train is faster than the bus.
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