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【单选题】
一般将 IP 上产生( ) 照射量作为基础的目标照射量 .A.
1mR
B.
10MR
C.
100mR
D.
1000mR
E.
10000mR
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】I-m waiting for Julia to introduce________ (her) to me．
【简答题】航空运输的主要缺点是飞机机舱容积和载重量都比较(),运载成本和运价比地面运输()。
【单选题】听力原文：W: Hello, Tom. Where are you going? M: Hello, Julia! I' m going to my aunt' s. W: Is that box heavy? M: No, it's light. W: But it's filled with books! Can I help you? M: Of course. Could you open...
A.
His aunt's home.
B.
His school.
C.
The city hall.
【简答题】航空运输的主要优点和缺点是什么？
【单选题】听力原文：W: Hello, Tom. Where are you going? M: Hello, Julia! I'm going to my aunt's. W: Is that box heavy? M: No, it's light. W: But it's filled with books. Can I help you? M: Of course. Could you open t...
A.
His aunt's home.
B.
His friend's home.
C.
The shopping mall.
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