卷筒边缘外周至最外层钢丝绳的距离不小于钢丝绳直径的2倍。（）
参考答案：对
治疗血瘀气滞，经行腹痛，兼风湿肩臂疼痛者，应选用
A．桃仁B．丹参C．红花D．姜黄E．益母草
During many sectors are foundering, the $21 billion videogame software industry is booming, adding game developers at a rate of 2,500 a year in the United States alone.
A．When
B．Where
C．Would
D．While
