门窗安装方法,有立口法和塞口法两种,必须采用塞口法施工的()
A.铝合金门窗
B.塑钢门窗
C.彩板钢门窗
D.木门窗
E.玻璃门
参考答案:A, B, E
—Linda hasn't shown up yet.
—It's strange. She _________. [ ]
A. could
B. might
C. must have
D. should have
上颌垫附双曲舌簧矫治前牙反.舌簧加力时间间隔是().
A.每天加力
B.2~3天
C.每周
D.两周
E.每月