在设计为卫生桥的固定桥制作中,桥体与黏膜间的间隙为
A.0.5~1mm
B.1~2mm
C.2~3mm
D.3~5mm
E.6~8mm
参考答案:D
The train was to arrive at 11:30,but it was an hour late.
A.about
B.likely
C.certain
D.supposed
营业员接待客户要(),微笑服务,问候得体,行礼有方,(),百问不烦。