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【单选题】
在估算各类货物的重心高度时,对于首尾部位的货舱,货物的重心可取为货堆高度的 (40160:第二章_稳性:617)A.
40%
B.
50%
C.
54%-58%
D.
75%-80%
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【单选题】What do we learn about American autoworkers in 1950?
A.
They had less job security than they do today.
B.
It was not too difficult for them to buy a house.
C.
Their earnings were worth twice as much as today.
D.
They were better off than workers in other industries.
【单选题】What do we learn about Americans studying abroad? 第四部分
A.
China is a top destination for them.
B.
The number dropped slightly last year.
C.
Most of them study abroad for only one semester.
D.
Most of them want to learn more about other countries.
【单选题】What do we learn about Pete Gentry?
A.
He saved the life of his brother choking on food.
B.
He rescued a student from a big fire.
C.
He is very good at public speaking.
D.
He gives informative talks to young children.
【简答题】Conversation 1. What do we learn about the man? [ ] A. He hopes to become a painter some day. B. He knows little about painting. C. He doesn't like the course at all. 2. Who is Lisa Frank? [ ]...
【简答题】听下面一段对话，回答第1-2小题。 1. What do we learn about Bill? A. He just got out of trouble. B. He did something right. C. He enjoyed what he had done. 2. What kind of film does the woman prefer? A. Something exc...
【简答题】听1段对话，回答第1小题。 1. What do we learn about Susan? [ ] A. She likes Yellow Stone Park. B. She likes postcards very much. C. She likes traveling all over the world.
【单选题】What do we learn about the Sainabury’s?
A.
It is adjusting its power-consuming policy.
B.
It is using food waste to generate electricity.
C.
It is consuming more power than ever before.
D.
It is being affected by a lack of power.
【简答题】血钾浓度过高,心脏活动可停止于_______ 状态。
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