BMWX2sDrive25i采用的是什么类型的变速箱？（）

B．8.8寸触摸屏

C．自然语音识别

D．全彩平视显示系统

此题为判断题(对，错)。

2. Adam and Eve On the sixth day God said, “I want to create people. They shall have a conscience, so they can think, know and love me, and love each other. I will make them masters of everything I have made, so they can take care of all the things I just have created.” God took dust from the dry land and he formed Adam, the first man. God gave Adam his shape and breathed life through his nostrils, so Adam became alive and started to breathe like all living things do. Adam opened his eyes and found himself in a wonderful garden, called Eden, which God had created for him. Adam was so excited about all the many animals which were surrounding him in the Garden of Eden. So he began to give all the animals names to tell them from one another. But Adam felt lonely, because among all the living beings he did not find any that looked liked him. Adam was the only human on the earth. God saw that it was not good for Adam to be alone and said, ”I will create a companion for Adam to be alone and said ,”I will create a companion for Adam so he will not be alone anymore.” So Adam fell into a deep sleep. God took out one of his ribs and from it he created a companion for Adam, called eve. When Adam woke up from his deep sleep and opened his eyes he saw this new person. He said, “She shall be called woman, because she came from man.” God blessed Adam and Eve and told them to be happy and enjoy all that he had created. God said, “Have children and let them help you in taking care of everything which I have created. I want every corner of the earth to be full of life and want everything to prosper, blossom and grow. You can find the garden I have made for you, but do not eat the fruit of the tree of knowledge. If you do so, you will die.” After these first six days when time had just begun and God had created everything, he said, “everything is perfect now. This is very very good.” 4.What do we know about Adam’s companion？

A、She was called as Adam’s best friend.

B、She liked animals very much.

C、Her appearance made Adam sad.

D、She made Adam not alone anymore.

用一组有30个观测值的样本估计模型Yi=β1X1i+β2X2i+μi后，在显著性水平0．05下对方程的显著性作检验，此检验的原假设是()。

A．β1=β2=0

B．β1=β2≠0

C．β1和β2不同时为0

D．β1=0

A、f=(sin(x/2))*2; int(f, x)

B、f=(sin(x/2))^2; int(f, x)

C、syms x; f=(sin(x/2))*2; int(f, x)

D、syms x; f=(sin(x/2))^2; int(f, x)

对模型Yi=β0+β1X1i+β2X2i+μi的最小二乘回归结果显示，样本可决系数R2为0．92，样本容量为30，总离差平方和为500，则回归的标准差为()。

A．1．217

B．1．482

C．4．152

D．5．214

B．铃流

C．接口

D．光线路

A、零线

B、相线L1、L2、L3

C、地线

D、控制线

74X148对I7的编码是什么？

A、A2A1A0=000

B、A2A1A0=111

C、A2A1A0=010

D、A2A1A0=101