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【单选题】
听力原文：M: My God! Where is my suitcase? W: Oh! I think that they've unloaded all the luggage. Well, it's not here. M: I suppose that suitcase is lost, doesn't it? W: Which suitcase was it? M: The one with all the souvenirs, the one that you told me not to pack. W: Are you sure you checked it? M: Sure. W: It might be, loaded on another flight. M: Do you think that it could be left behind? W: That's always a possibility. Sooner or later, it'll be traced and rerouted. M: I hope you are right. W: Well...What do we do now? M: I should report it to the airline, look, why don't you wait for me in the coffee shop? I'll meet you there as soon as I'm through. W: OK! Good luck! Where does the conversation most likely take place?A.
At the railway station.
B.
At the bus station.
C.
At the airport.
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【单选题】均匀平面波由空气垂直入射到理想导体表面时产生全反射,反射波与入射波叠加形成驻波,其电场强度和磁场强度的波腹位置
A.
相同
B.
相差λ/4
C.
相差λ/2
D.
相差λ
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【简答题】There were a lot of hardships when growing up, but there were a lot of fond memories as well. Back in those days, we had very little money, so we couldn’t afford a garden tractor that could make garde...
【单选题】下列带符号整数在计算机中表示方法的叙述中，________是错误的。
A.
负数的符号位是"1"
B.
正整数采用补码表示，负整数采用原码表示
C.
正整数采用原码表示，负整数采用补码表示
D.
数值"0"使用全0表示
【单选题】It’s one’s bad habits, rather than a certain natural disaster, one’s longevity (长寿)for most of the time.
A.
that affects
B.
which affect
C.
which affects
D.
that affect
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