以下对全国支票影像系统，描述不正确的是（）。 A.通过影像交换系统处理的支票影像信息

关于苯巴比妥，下列哪项不正确（）

A.选择性作用于大脑皮质运动区而具有抗癫痫作用

B.可作为治疗癫痫大发作的首选药

C.可长期维持用药

D.对癫痫小发作无效

E.对精神运动性发作，部分有效

When people hear that I’m the youngest person to row solo across the Atlantic Ocean, they all have the same question: How did a 22-year old woman row a 19-foot boat for 70 days through high winds and crashing waves? Well, the biggest  difficulty for me wasn’t physical. By the time I decided to do the ocean row, I had already biked 3,300 miles cross-country, run across the Mojave Desert, and swum the 325-mile length of the Allegheny River. No, the tough part would be mental: How would I handle the loneliness, the boredom of the vast sea?

I set off on January 3, 2010. I set my sights on getting past the quarter-way mark, which would take about 20 days.

Day 20, January 22, was gray and cloudy. I could have done something to celebrate, such as treating myself to a chocolate bar. But I didn’t.

I was suffering from terrible loneliness. I hadn’t seen landing over two weeks. Every day was beginning to feel the same. Eating, rowing, sleeping, watch the sky, watch the ocean.

Then, around sunset, I saw something move on the horizon. They were dolphins! They circled my boat. Suddenly I felt so grateful. They had come to help me celebrate, just when I needed them. I rowed at full strength for the next 20 minutes with the dolphins around. By the time we went our separate ways, I was no longer lonely. Better yet, I knew I would be okay.

I did make it, all 2,817 miles. I hit the coast of Guyana, South America, on March 14, after 70 days and five hours at sea. My ocean row raised $70,000 for the Blue Planet Run Foundation, which funds drinking water programs around the world. I know some athletes spend the entire journey imagining the end, and that helps them get through. But for me, the secret is to focus on the moment, where you experience the personal growth—those moments of awareness of being connected to the sun, the weather, and the waves. And, on the best day of my life, those dolphins, which freed myself from terrible loneliness.

小题1:

Which is the step taken as part of preparation for the tough row?

A．swimming the 325-mile length of the river

B．answering the same question raised by people

C．running 3,300 miles cross-country

D．biking across the Mojave Desert小题2:

What does the underlined part mean?

A．I didn’t have any chocolate bar for energy.

B．I wasn’t in the mood to celebrate my first goal.

C．It’s a pity not to celebrate my passing the quarter of the way

D．It’s a pity not to treat myself to a chocolate bar on Day 20.小题3:

What can be implied from the last two paragraphs?

A．Imagination was an effective way to help me get through.

B．The Blue Planet Run Foundation helped me a lot.

C．The dolphins accompanied me to reach my destination

D．The unexpected dolphins swept away my loneliness小题4:

Which can be the best title of the passage?

A．The day I stopped being lonely

B．The only challenge for a 22-year old

C．How to overcome loneliness at sea.

D．How to row alone across the Atlantic

用落体法验证机械能守恒定律的实验中：

（1）运动公式对实验条件的要求是_________，为此，所选择的纸带第1、2两点间的距离应接近___________

（2）若实验中所用重锤的质量m=1 kg，打点纸带如图所示，打点时间间隔为0.02 s，则记录B点时，重锤速度 v_B=_________，重锤动能E_k=________，从开始下落起至B点重锤的重力势能减少量是________，由此可得出的结论是______

（3）根据纸带算出相关各点的速度v，量出下落距离h，则以 v²/2为纵轴，以h为横轴画出的图象应是图中的哪个____________

钻孔加工时，如果孔距为编程时，把孔距变为（）。

A.A

B.B

C.C

D.D

常压塔塔顶、顶循、一中、二中回流取热分别为454×103kJ/h，10337×103kJ/h，11993×103kJ/h，17367×103kJ/h，求全塔回流取热为多少？