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【多选题】
【图片】图示八跨连续梁，利用多结点力矩分配法改进技术分析，下面说法不正确的是（ ）A.
在B、C、D结点各自施加约束力矩增量
B.
在E、F、G、H结点各自施加约束力矩增量
C.
在C、E、G结点各自施加约束力矩增量
D.
在B、C、D、E各自施加约束力矩增量
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举一反三
【单选题】Reasons for a nation to trade with other nations in the world can be ( )
A.
Resource reasons
B.
Economic reasons
C.
Political reasons
D.
All of the above
【多选题】____,____,____ and many other reasons are all responsible for the boom in international trade.
A.
Resource reasons
B.
economic reasons
C.
political reasons
D.
social system reasons
【简答题】Social reasons for trigging depression are ______.
【多选题】Asking for reasons
A.
Why do you think that?
B.
due to
C.
Finally
D.
What are your reasons for saying that?
E.
Can you explain why you think so?
F.
Also
G.
First of all
【简答题】数据库设计分为概念设计、逻辑设计和物理设计，其中E—R图是用于【 】设计的常用工具。
【简答题】在数据库的概念结构设计中，常用的描述工具是上【 】。
【多选题】What are the possible reasons of a delayed flight?
A.
poor weather conditions
B.
maintenance of aircraft
C.
technical reasons
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