制作可摘局部义齿印模,选择的托盘与牙弓内外侧应有多大间隙()。
A.无间隙
B.1~2mm间隙
C.2~3mm间隙
D.3~4mm间隙
E.5mm以上间隙
参考答案:D
The Shanghai Expo Site covers a total area of 5.28 sq km, ______12 pavilion groups, of _____ Zone A hosts China Pavilion, and other national Pavilions for Asian countries except Southeast Asian ones.
A.included, who
B.including, which
C.included, which
D.including, what
非线性电阻元件其电压、电流关系一定是非线性的。