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问题 单项选择题

生活垃圾收集点的服务半径一般为( )m；通往环境卫生设施的通道的宽度不应小于( )m。

A．80，4
B．80，3
C．70，3
D．70，4

答案

参考答案：D

单项选择题

固定义齿中恢复缺牙间隙的结构称作

A．冠内固位体

B．冠外固位体

C．固定连接体

D．活动连接体

E．桥体
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选择题

Those businesses that are closely ____ sport such as the huge brands of Nike, Adidas and Puma make the clothes and equipment that sportspeople need to play their games.

A．applied to

B．contributed to

C．connected to

D．submitted to
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