激光打印机的特点有（）、（）。

已知₃₃As、₃₅Br位于同一周期，下列关系正确的是

A．原子半径：As＞C1＞P

B．热稳定性：HC1＞AsH₃＞HBr

C．还原性：As^3-＞S^2-＞C1^-

D．酸性：H₃AsO₄＞H₂SO₄＞H₃PO₄

Earning a black belt in martial arts and being issued a pilot’s license are both impressive accomplishments that take year of effort to achieve, but 30-year-old Jessica Cox has done both despite being born without arms.

In spite of all difficulties , but with strong faith and the help of her family ,Cox put herself through high school and then college, typing papers with her toes, She became the first armless black belt in American Taekwondo （跆拳道）Association and now has two black belts, She got her driver’s license and then, astonishingly, her pilot’s license in 2008, The achievement earned her a place in the Guinness Would Records, which recognized her for becoming the first person without arms to fly an airplane.

Now Cox is the subject of a new documentary, Rightfooted, Which Cox says the hopes will inspire disabled young people around the world, “Had I watched a film similar to this one earlier, in my life ,I know it would have make a difference.” Cox says in a trailer (预告片) for the documentary.

The young woman says her current goal is to become a motivational speaker, particularly for chileren born without arms , She says she believes her message can reach millions of people working to overcome a variety of disabilities.

As the next step, she has been invited by non-governmental organization Handicap International to work with disabled children in Ethiopia Cox is extremely excited for the opportunity, She hopes that sharing her story will inspire children with disabilities and encourage Ethiopians to include all children in school because in Ethiopia only one percent of children with disabilities are educated and their parents do not think they can benefit from going to school, She also hopes to meet with government officials to inspire change.

小题1:What does the second paragraph mainly tell us?

A．Cox earned a place in the Guinness World Record

B．Cox can type papers as a common person does

C．Cox has little difficulty in doing things by herself

D．Cox has made some great achievements小题2:What’s the purpose of the documentary Rightfooted?

A．To inspire all young people with disabilities

B．To tell the story of Cox’s life and her desire

C．To show how important one’s foot is

D．To show how Cox works in Ethiopia小题3:Why does Cox want to be a speaker?

A．To give her message

B．To prevent children born without arms

C．To help people overcome disabilities

D．To prove she can also be a successful speaker小题4:The goal of Handicap International in Ethiopia is to          .

A．meet the government officials

B．help disabled children find jobs

C．run education projects for children with disabilities

D．help Cox realize her dream of becoming a speaker小题5:What is true of Jessica Cox?

A．She is the first woman pilot

B．She is a disabled Taekwondo champion

C．She is the director of a documentary

D．She is an armless woman with strong faith

贷后服务支持岗组织实施与个人信贷客户的集中对账工作。对账周期原则上要求不少于（）一次。

A.每月

B.每季

C.每半年

D.每年

用标准差的倍数或说明了置信水平的区间的半宽表示的测量不确定度，称为（）。

A.标准不确定度

B.扩展不确定度

C.系统不确定度

D.随机不确定度

在管道的流量计算中，管道的流量是管子的横断面的面积和（）相乘得来的。

A、半径

B、直径

C、时间

D、水流的速度