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【多选题】
关于座腿式人字抱杆整立铁塔，下列说法正确的是（ ）。A.
座腿式人字抱杆整立铁塔由倒落式人字抱杆整立铁塔发展而来，
B.
其最大特点是人字抱杆由坐在地面改为坐在铁塔的塔腿上。
C.
其长度较短，重量较轻。有人也常称之为小人字整
D.
塔腿必须补强加固，否则不能起立。
E.
降低了牵引系统受力
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反馈参考答案：
举一反三
【单选题】What is David worrying about?
A.
He can’t live with his father.
B.
His father has no friends.
C.
His mother passed away three years ago.
D.
His father is lonely.
【单选题】“Which do you want, the red one or the black one?” “_____. How about showing me another?”
A.
Either
B.
Both
C.
Neither
D.
None
【简答题】简述生理性止血的过程。
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【简答题】简述生理性止血的第二个过程。
【简答题】简述生理性止血的过程及血小板在其中发挥的作用。
【简答题】听录音，根据问题选择正确的图片 1. What animal are they talking about? 2. What sign did they see? 3. Where is Uncle Tom going to have his meeting tomorrow? 4. What will the weather be like tomorrow? 5. What is Bruce'...
【单选题】What is this passage mainly about?
A.
The definition and impact of carbon footprint.
B.
Ways to reduce carbon emissions in our daily life.
C.
The amount of CO2-eq generated each year.
D.
The carbon emissions' effects on our life.
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