剪刀撑斜杆与地面的倾角宜在（）之间。 A.45°～65° B.45°～60° C.3

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问题单项选择题

剪刀撑斜杆与地面的倾角宜在（）之间。

A.45°～65°

B.45°～60°

C.30°～60°

D.30°～50°

答案

参考答案：B

判断题

( ) 1.	This is a movie theatre. They want to watch a movie.
( ) 2.	Let's go to the library to read a book. No. I want to buy a new dress.
( ) 3.	The weather is sunny and windy.
( ) 4.	How's the weather? The weather is cold and snowy.

单项选择题

复合模成组的推钉一般（）个同时作用在一个推板上，注意调整使其受力均匀。

A.1～2

B.2～3

C.3～4

D.4～5