借贷记账法下的余额平衡是由( )决定的。A．资产=负债+所有者权益的等式 B．有借

闸阀具有流体阻力小，启闭力较小，介质可以从()流动等特点。

(A)一个方向

(B)两个方向

(C)三个方向

(D)指定的单一方向

如图，一质量不计，可上下自由移动的活塞将圆筒分为上下两室，两室中分别封闭有理想气体，筒的侧壁为绝缘体，上底N，下底M及活塞D均为导体并按图连接，活塞面积。在电键K断开时，两室中气体压强均为，ND间距，DM间距，将变阻器的滑片P滑到左端B，闭合电键后，活塞D与下底M分别带有等量异种电荷，并各自产生匀强电场，在电场力作用下活塞D发生移动。稳定后，ND间距，DM间距，活塞D所带电量的绝对值（式中E为D与M所带电荷产生的合场强，常量）。求：

（1）两室中气体的压强（设活塞移动前后气体温度保持不变）；

（2）活塞受到的电场力大小F；

（3）M所带电荷产生的场强大小和电源电压U；

（4）使滑片P缓慢地由B向A滑动，活塞如何运动，并说明理由。

可起尿糖假阳性的是（）

A.异烟肼、链霉素

B.肌酐、尿酸

C.水杨酸

D.葡萄糖醛酸

E.阿司匹林

Arthur Miller (1915—2005) is universally recognized as one of the greatest dramatists of the 20th century. Miller's father had moved to the USA from Austria Hungary, drawn like so many others by the “Great American Dream”. However, he experienced severe financial hardship when his family business was ruined in the Great Depression of the early 1930s.

Miller's most famous play, Death of a Salesman, is a powerful attack on the American system, with its aggressive way of doing business and its insistence on money and social status as indicators of worth. In Willy Loman, the hero of the play, we see a man who has got into trouble with this system. Willy is “burnt out” and in the cruel world of business there is no room for sentiment: if he can't do the work, then he is no good to his employer, the Wagner Company, and he must go. Willy is painfully aware of this, and at a loss as to what to do with his lack of success. He refuses to face the fact that he has failed and kills himself in the end.

When it was first staged in 1949, the play was greeted with enthusiastic reviews, and it won the Tony Award for Best Play, the New York Drama Critics' Circle Award, and the Pulitzer Prize for Drama. It was the first play to win all three of these major awards.

Miller died of heart failure at his home in Roxbury, Connecticut, on the evening of February 10, 2005, the 56th anniversary of the first performance of Death of a Salesman on Broadway.

小题1:Why did Arthur Miller's father move to the USA?

A．He suffered from severe hunger in his home country.

B．He was attracted by the “Great American Dream.”

C．He hoped to make his son a dramatist.

D．His family business failed小题2:The play Death of a Salesman________.

A．exposes the cruelty of the American business world

B．discusses the ways to get promoted in a company

C．talks about the business career of Arthur Miller

D．focuses on the skills in doing business小题3:What can we learn about Willy Loman?

A．He treats his employer badly.

B．He runs the Wagner Company.

C．He is a victim of the American system.

D．He is regarded as a hero by his colleagues.小题4:After it was first staged, Death of a Salesman________.

A．achieved huge success

B．won the first Tony Award

C．was warmly welcomed by salesmen

D．was severely attacked by dramatists小题5:What is the text mainly about?

A．Arthur Miller and his family.

B．The awards Arthur Miller won.

C．The hardship Arthur Miller experienced.

D．Arthur Miller and his best known play.

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