【单选题】Da(丹克莱尔准数)为化学反应速率与()之比。
【单选题】Hallen is a 30 years old woman, who had post traumatic coma associated with urinary tract infection. Doctor ordered urine culture. The correct way to leave the urine sample is ( )
A.
by urethral catheterization
B.
keeping the anterior urine
C.
keeping the morning urine
D.
collection of 24h urine
E.
retention of 12h urine
【单选题】在LTE测试中,应用层速率,PDCP层速率,MAC层速率,物理层速率,哪个值最大
【单选题】在 TD-LTE中,应用层速率, PDCP层速率, MAC 层速率,物理层速率,哪个值最大()
【简答题】最概然速率和平均速率的物理意义各是什么?有人认为最概然速率就是速率分布中的最大速率,对不对?