__isthat？That’sTom’smother（） A: What B: Whose C: Who

This book isthat ______. A: the student B: the student’s C: the students’

(2) 质点到达$x$坐标最大值时刻的速度和位置. A: $\vec{v}=-5t\hat{y},\vec{r}=12.5(\hat{x}+\hat{y})$ B: $\vec{v}=-5t\hat{y},\vec{r}=14.5(\hat{x}-\hat{y})$ C: $\vec{v}=5t\hat{y},\vec{r}=12.5(\hat{x}-\hat{y})$ D: $\vec{v}=-5t\hat{y},\vec{r}=12.5(\hat{x}-\hat{y})$

Isthat__hat?No,it’snot__.It’s__. A: your,my,Toms B: your,mine,Tom’s C: yours,mine,Tom

What does the man think of the hat A: This hat is very beautiful. B: This hat is not so beautiful. C: This hat is beautiful except the color.

Isthat（）（重）cargo? A: smell B: heavy C: light D: powder

Isthat thereason youareinfavoroftheproposal? A: which B: what C: why D: forthat

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

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）\(Mse(\hat A) = E\left[ {{{(A - \hat A)}^2}} \right] = \int_{ - \infty }^\infty {\int_{ - \infty }^\infty {{{(A - \hat A)}^2}p} } (A{\rm{|}}z)dzdA\)

It isthat interest rates should be reduced. A: related B: inseparable C: desirable D: enormous