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【单选题】
以下关于钢管脚手架扣件连接，说法错误的是：( )A.
扣件的基本形式有直角扣件、回转扣件、对接扣件三种
B.
回转扣件主要用于45度角相交的钢管的连接
C.
直角扣件主要用于两根垂直相交的钢管连接
D.
对接扣件主要用于钢管的接长连接
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反馈参考答案：
举一反三
【简答题】账户的简单格式分为左、右两方，其中，左方表示增加，右方表示减少。（ ）
【单选题】What does the woman say about parking?
A.
Each talent is given a parking space.
B.
It' s difficult to find a parking place.
C.
The tenant has to pay to park.
D.
The tenant can use any space in the parking area.
【单选题】What do we learn from this conversation?
A.
The woman studies at night.
B.
The woman goes to school during the day and works at night.
C.
The woman has to work to support herself.
【单选题】What does the man assume when the woman says she is not going?
A.
She' s too busy to go.
B.
She has no money left.
C.
She isn' t feeling well.
D.
She doesn' t like football.
【简答题】上图中的abc和 a 、 b 、 g 统 称为——。
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