铝合金采用碱性溶液脱脂时,其槽液含量和处理时间需要经过试验确定,以防止过腐蚀。( )
参考答案:对
以下哪种属于颌间固定 ()
A.颌间结扎
B.小环结扎
C.连续多环结扎
D.带钩牙弓夹板
E.头帽固定
I wish you’d do____talking and some more work. Thus things will become better.
A.a bit less
B.any less
C.much more
D.a little more