( )木工制作弹簧门的一般操作工艺顺序：刨削制作门扇→安装门扇顶部轴套和底部的回转轴套→安装顶轴→安装地弹簧→门扇安装就位。
参考答案：错
—What do you think of the music teacher ?
—______ she is an attractive lady, she can be extremely difficult to work with．
A．If
B．As
C．Because
D．While
异步电动机的定于绕组一般为双层的（）绕组，做成整矩绕组或（）绕组。
