敷设的电缆要与动力电缆保持（）以上的距离。
A、0.1m
B、0.2m
C、0.3m
参考答案：C
It's reported the Olympic flame for 2008 Beijing Games ________ Beijing International
Airport on March 31, 2008. [ ]
A. reached to
B. arrived at
C. got at
D. entered in
渗透性利尿药具有哪项特点（）
A.不易经肾小球滤过
B.可被肾小管重吸收
C.通过代谢变成有活性的物质
D.静脉注射可升高血浆渗透压
E.易从血管渗入组织液中
