飞机的机身设计中其强度越高越好。

（）即计算各方案的净年值NAV，取大者为最优方案。

A.净现值法

B.净现值率

C.净年值

D.年值法

王华同学去某批零兼营的文具商店，为学校美术活动小组的30名同学购买铅笔和橡皮，按照商店规定，若给每人买2支铅笔1块橡皮，则必须按零售价计算，需支付30元；若给每人各买3支铅笔和2块橡皮，则可按批发价计算，需支付40.5元，已知每支铅笔的批发价比零售价低0.05元，每块橡皮的批发价比零售价低0.10元，问这家商店每支铅笔和每块橡皮的批发价各是多少元？

人月费单价法是目前国际上较广泛采用的一种工程咨询费用的估算方法。估算费用由( )等部分组成。

A．酬金

B．基本工资

C．福利费

D．可报销费用

E．不可预见费

In its everyday life, Italy is very much the man’s world. However, because of the Italian’s understanding of foreigners, the woman tourist is able to invade many of the male places that are prohibited to Italian women. These places include the cafè and the wine shop.

In the large cities the cafè is a combination of club and office. Here, for the price of a coffee, an Italian can read all the newspapers brought to him. And he can transact business, with the waiter producing pen, ink, and stamps as needed. Or if he wants, he can sit outside under a canvas covering before the door and enjoy the sight of beautiful women passing by.

The wine shop, as a rule, is a more vigorous place than the caf6, and is filled almost exclusively with men. Wandering singers, generally in groups of two or three, add to the noise of these places with their songs and music. Many of the songs are of a political character and make fun of the leading statesmen of Italy, America, England, France, and Russia. But the songs are generally showing off a spirit of mischief. And when the criticism is about America, the American tourists find themselves laughing as much as anyone else. The Italian is a master at making fun of you and making you like it.

The Italian men are deep-rooted gamblers. They have been brought up to it as children, but they are cautious gamblers and never go too much in it. The national lottery used to be one of the most popular forms of gambling. But later a football stake had taken away much of the interest in the lottery. But here the important thing is that gambling, the same as drinking, seldom goes to an Italian’s head and his bets are not really dangerous risks. Even at cards the Italian plays for low stakes, generally for a cup of coffee or wine.

In this world of the Italian male it would be careless if the romanticism of the Italian were neglected. The Italian might well be described as the world’s greatest romanticist. From any boat in Venice to any member of the government in Rome, the Italian is always aware of romance, of love and of the importance of being a good lover.

on the beaches of Italy, the visitor is aware that the Italian really live for romance. His manners, his compliments, his charm and his general way of behaving are those of a romanticist. Almost every Italian you meet is convinced that he is another Casanova.

Romance is as much a part of Italy as its art and its history. Perhaps the feeling of romance that wells up in you when you come to Italy is one of the greatest things that Italy has to offer a world that is tired of war and political intrigue. It is the ideal place for a honeymoon because hotel managers and waiters make you conscious of your own love and stress it in such a way that you feel more in love in this country than in any other.

In Italy, the cafè and the wine shop （）.

A．welcome everybody, including both men and women

B．welcome the Italian women only

C．do not allow the Italian women to come in

D．do not allow the foreign women to come in