在短距离的起跑中如果第一次偷跑，在第二次又有人偷跑时（）
A. 取消其资格
B. 每个人都有两次机会
C. 再来第三次
转8AG转向架同组减振弹簧、同规格的摇枕弹簧自由高度差不大于（）。
A. 1mm
B. 2mm
C. 3mm
D. 4mm
Which statement is true about the comparison of voice traffic with video traffic？（）
A. Video conferencing traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.
B. Latency requirements are less stringent for video traffic than for voice traffic.
C. Video traffic is less sensitive to dropped packets than for voice traffic.
D. Video traffic requires the retransmission capabilities of TCP whereas voice uses UD
E. Voice traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.
F. Voice traffic requires the retransmission capabilities of TCP whereas video uses UD
关于ORACLE下面有关序列的说法，正确的是（）
A. 序列可以在表中插入值时，可以使某列的值按一定的幅度增长
B. 序列是可用于按照设定的规则自动产生数据的方案对象
C. 序列的操作不能在企业管理器中进行
D. 序列创建可以用CREATE SEQUENC
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