财务主管具有凭证的审核权，可以审核自己录入的凭证。( )

如图所示，宽度L=1m的足够长的U形金属框架水平放置，框架处在竖直向上的匀强磁场中，磁感应强度B=1T，框架导轨上放一根质量m=0.2kg、电阻R=1.0Ω的金属棒ab，棒ab与导轨间的动摩擦因数μ=0.5，现用功率恒为6W的牵引力F使棒从静止开始沿导轨运动（ab棒始终与导轨接触良好且垂直）。ab棒从静止开始经过时间t=1.5s获得稳定速度，此过程中，通过棒的电量q=2.8C（框架电阻不计，g取10m/s²）。问：

（1）ab棒达到的稳定速度多大？

（2）棒的电阻R产生热量多少？

阅读理解。

     The science of physics today is as current as the morning newspaper. Indeed, as a result of new advances

in physics and their rapid application to inventions designed to satisfy man' s wants, the world itself has been

changing rapidly. Space technology, industrial technology, and the technology of the home, the farm, the office,

the bank, and the department store have all been revolutionized.

     Clearly, every grown-up today would understand the world he lives in much better if he knew something

about physics. Whether it is Congress voting huge sums of money for new warships, space exploration, or

atomic energy, the office staff learning to use a new computer, son Bobby wanting to know about going to

the moon or the housewife learning to operate a new electric stove, physics seems to be everywhere.

     Teachers in thousands of schoolrooms in America are trying to communicate some of the excitement and

importance of these new developments to their students. They know that some of their eager students will

someday be scientists and will themselves then contribute to the development of new knowledge or its

application to new things.

     But in any case, they can be sure that if they bring a knowledge of science (any science) to their students in

meaningful and interesting ways, they have contributed much to helping each one live a more meaningful life.

1. The application of new advances in physics to inventions ____.

A. may solve all the problems in teaching

B. can help people understand the meaning of life

C. is intended to meet people's needs

D. makes people communicate easier without face to face  

2. According to the passage, many American teachers are making efforts to do all of the following

    EXCEPT ____.

A. arousing(激起) their students' interest in physics

B. making their students understand the importance of physics

C. giving their students the information of new advances in science

D. creating excitement about their new inventions among their students

3. The word "themselves" in the third paragraph refers to ____.

A. some American teachers

B. some of the eager students

C. the new developments

D. the scientists in physics

4. The first two paragraphs of the passage mainly tell us ____.

A. new advances in physics can result in new inventions

B. physics is widely used in our life

C. the world has been changing rapidly

D. space and industrial technology have all been revolutionized

断路器技术状况良好，外观整洁，技术资料齐全。正确，能保证安全供电是（）。

A、名牌设备

B、一类设备

C、优良设备

D、三类设备

唐女士，34岁，已婚，放节育环3年，停经48天，少量 * * 出血3天，突然右下腹剧烈撕裂样疼痛，检查：血压80/40mmHg，右下腹压痛，反跳痛明显，但肌紧张不明显，妇科检查：后穹隆饱满，宫颈举痛(+)，宫口闭，子宫正常大小呈漂浮感。双附件触诊不满意。本病可初步诊断为

A．急性阑尾炎

B．黄体破裂

C．卵巢囊肿扭转

D．输卵管妊娠

E．难免流产

患者女性，20岁，因“多饮、多尿、食欲缺乏伴体重下降6个月”来诊。查体：身高161cm，体重55kg。血糖19.2mmol/L，尿酮体阳性。

治疗1个月后，空腹血糖为14mmol/L，中、晚餐前血糖控制较满意。最佳措施为（）

A.中、晚餐前加用中效胰岛素

B.睡前增加1次短效胰岛素

C.晚餐减量

D.睡前加用口服二甲双胍

E.加强午夜及凌晨血糖监测，然后再调整胰岛素用量