• 2022-05-30
    请问 Is~it a~hat or a cat?这句话,_______ 单词不可以连读.( )
    A: Is and it
    B: it and a
    C: hat and or
    D: a and hat
  • B,C

    内容

    • 0

      均方误差是衡量贝叶斯估计的性能指标之一,若\(\hat A\)是基于观测量\(z\)对\(A\)的贝叶斯估计,则\(Mse(\hat A)\)的表达式是 A: (A)\(Mse(\hat A) = E\left[ {{{(A - \hat A)}^2}} \right] = \int_{ - \infty }^\infty {{{(A - \hat A)}^2}p(z;A)dz} \); B: (B)\(Mse(\hat A) = E\left[ {{{(A - \hat A)}^2}} \right] = \int_{ - \infty }^\infty {{{(A - \hat A)}^2}p(A)dA} \) C: (C)\(Mse(\hat A) = E\left[ {{{(A - \hat A)}^2}} \right] = \int_{ - \infty }^\infty {\int_{ - \infty }^\infty {{{(A - \hat A)}^2}p} } (z,A)dzdA\) D: (D)\(Mse(\hat A) = E\left[ {{{(A - \hat A)}^2}} \right] = \int_{ - \infty }^\infty {\int_{ - \infty }^\infty {{{(A - \hat A)}^2}p} } (A{\rm{|}}z)dzdA\)

    • 1

      (2)从$0$到$2s$内质点的位移; A: $-12\hat{x}m$ B: $21\hat{x}m$ C: $16\hat{x}m$ D: $12\hat{x}m$

    • 2

      What do they think of the hat A: The man thinks the hat fit well with the shoes, and he likes it. B: Although the hat is old fashioned, the woman likes it very much. C: The woman thinks the hat is fashionable but the man is out of fashion. D: The man doesn’ t like the hat because it was not nice with the shoes.

    • 3

      A hat stand is something that you can put your hat and clothes on.

    • 4

      ________hat is this? It’s________.