侧腭杆离开龈缘应()
A.8mm
B.至少6mm
C.4~6mm
D.3~4mm
E.1.5~2mm
参考答案:C
The corn powder with two other things _______ water to make all kinds of good.
A.are mixed with
B.is mixed with
C.are mixed by
D.is mixed by
用电业务扩充工作“三不指定”原则,指的是()。
A.不得指定设计单位
B.不得指定材料供应商
C.不得指定监理单位
D.不得指定施工单位