当主矢不为零,主矩不为零时,构件( )。
A. 处于静止
B. 移动
C. 转动
D. 一般移动,一边转动
主矢与简化中心位置( )。
A. 无关
B. 有关
C. 有时有关,有时无关
D. 无法确定
主矢和主矩都不为零时,( )。
A. 可以通过移动简化中心位置而简化为一个主矢
B. 构件一边移动一边转动
C. 可以用一个力等效
D. 可以用一个力偶等效
E. 构件处于平衡状态
Customer: I’m (1) ____________a sweater. Do you have any blue sweaters?Mateo: Well, is the sweater for you or for someone else?Customer: It’s for me.Hector: Well, (2)____________ this sweater right here? I think this would look great on you.Customer: I like it. It might be a bit big. What size is it?Mateo: That is a (3) ________. Here is a (4) ________.Customer: Yes, I think this is the right (5) ________. How much is it?Mateo: It’s (6)________ dollars.