图中所示是一张唱片，请问，唱片外沿部分的A处录音槽转动一圈，与半径只有A一半的B处录音槽相比较，录音能多几倍的时间？()
查看答案
2002-2006年企业个数增长最多的是()
A. 2003-2004年
B. 2004-2005年
C. 2005-2006年
D. 2002-2003年
Henry went back home to put on his best clothes.
A. Right.
B. Wrong.
C. Doesn't say.
The clothes that Henry wore at first were old clothes.
A. Right.
B. Wrong.
C. Doesn't say.
You are 26 years old and are interested in teaching. You should apply to______.
A. Capes Taxi, 17 Palace Road, Boston
B. Recruitment office, Southern Airlines, Heathrow Airport West, HR37 UK
C. The Director of Studies, Instant Languages Ltd. ,279 Canal Street,Boston
微信支付 
支付宝支付