题型:判断题 —When is your school trip? —__________ [ ]A. Yes, it's March 5th B. My birthday is April 3rd C. I'm twenty D. Sorry, I don't know 查看答案
题型:判断题 马斯京根流量演算方程为:Q2=C0L2+C1I1+C2Q1,,其中,C0.C1.C2为演算系数,I1.I2为相对应t1.t2时刻的入流,Q1.Q2为相对应t1.t2时刻的出流,t2=t1+△t,如马斯京根流量演算法有预见期△t,则有()。A.C0+C1+C2=1,B.C0=0,C.流量比重因子X=0,D.C0.C1.C2均为正数 查看答案