皮皮学，免费搜题
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搜题
【单选题】
人体对X线衰减的叙述，错误的是A.
骨组织对X线衰减最大
B.
软组织对X线衰减相当
C.
组织对X线衰减不同形成影像对比
D.
骨对X线衰减相当于铅
E.
空气对X线衰减最小
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皮皮学刷刷变学霸
举一反三
【单选题】TIR 的主要作用是( )
A.
便利于开展集装箱联合运输
B.
允许集装箱免税过境
C.
允许持有 TIR 手册的承运人在集装箱铅封完好的情况下免检查过境
D.
统一公路运输所使用的单证
【多选题】常用闸刀开关有HK1.HK2系列胶盖瓷底闸刀开关,它们的额定电压为交流380V,额定电流有( )几种。
A.
10A
B.
15A
C.
30A
D.
80A
E.
60A
【简答题】翻译下列定语从句: 1. As I came in, Michael, who owned the taxi that used to stand at the corner of our street, waved to me from a table. 2. But the Southern States wanted to set up a country of their own, whe...
【简答题】选出句中谓语的中心词(只填字母) 1 I don't like the picture on the wall. A. don't B. like C. picture D. wall 2 The days get longer and longer when summer comes. A. get B. longer...
【简答题】Listen to a dialogue and decode the message by finding out the correct choices in the brackets according to what you have heard. Andy and Donna are good friends. Donna is recovering from a 1 bike, car...
【简答题】TIR 运输
【简答题】汽车底盘是由哪几个系统组成的?
【简答题】听第1段对话，完成第1-3小题。 1.Li Lei often comes to school _____. [ ] A. by bus B. on foot C. by bike 2.Lisa usually comes to school _____. [ ] A. on foot B. by bus C. by bike 3.What time is it now? [ ...
【简答题】听录音，选出所听句子中含有的单词或词组。 ( ) 1. A. sunny ( ) 2. A. dry ( ) 3. A. school bus ( ) 4. A. eats ( ) 5. A. walk B. cook B. wet B. bus driver B. comes B. take C. rainy C. clean C. bus stop C....
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