The President is expected to _____________ the Congress every August.
A.talk
B.speak
C.address
D.greet
A.talk
B.speak
C.address
D.greet
A.S-K*EXP(-rt)≤C-P≤S-K
B.S-K≤C-P≤S-K*EXP(-rt)
C.C-P=S-X*EXP(-rt)
D.C-P=S-X
已知被估计参量θ的后验概率密度函数为
p(θ|x)=(z+λ)2θexp[-(x+λ)θ],θ≥0
假如非晶结构因子近似可以用一个函数S1q(s)-1=[sin(βs)/(βs)]exp(-αs)来表示,对分布函数g(R)的第一个峰R0与参数α,β之间的关系是什么?
设解的形式为ul,m=u(0)exp[i(lkxa+mkya)-ωt],这里a是最近邻原子间距,证明运动方程是可以满足的,如果ω2M=2c(2-coskxa-coskya),这就是问题的色散关系。
At no time ______ what was happening.
A.the President was aware of
B.the President was aware about
C.was the President aware of
D.was the President aware on
证明:对于常系数方程
可以选到适当的λk(k=1,2,…,n),使得在变换
u=υexp(λ1x1+λ2x2+…+λnxn)
下,把方程化简为
并且求出λk(k=1,2,…,n).
B.a Spanian-born lawyer, president of the International Romany Union
C.a Portugal-born lawyer, president of the International Romany Union
D.we don’t Know