授信担保的方式为：（）、（）和（）。

RS和TON、TP等定时器均在控制器算法的（）函数库中。

根据美国《发现》杂志最新______，一项新研究发现成年人出汗时皮肤发出的刺鼻气味在动物王国堪称______。这使人类成为世界上最臭的动物，这种臭味也成为吸引蚊子叮咬的主要原因。
依次填入画横线部分最恰当的一项是( )。

A．报导 史无前例
B．报道 独一无二
C．报料 独树一帜
D．报告 绝无仅有

Large companies need a way to reach the savings of the public at large. The same problem, on a smaller scale, faces practically every company trying to develop new products and create new jobs. There can be little hope of raising the money needed from friends and people we know, and while banks may agree to provide short-term finance, they are generally unwilling to provide money, for long-term projects. So companies turn to the public, inviting people to lend them money, or take a share in the business in exchange for a share in future interests. This they do by issuing stocks and shares in the business through the Stock Exchange. By doing so they can put into circulation the savings of single persons and institutions, both at home and abroad.

When the saver needs his money back, he does not have to go to the company with whom he originally placed it. Instead he sells his shares through a stockbroker to some other saver who is seeking to invest his money.

Many of the services needed both by industry and by each of us are provided by the government or by local organizations. Without hospitals, roads, electricity, telephones and railways, this country could not work. All these require continuous spending on new equipment and new development if they are to serve us properly, requiring more money than it is raised through taxes alone. The government, local organizations and nationalized industries therefore frequently need to borrow money to finance major capital spending, and they, too, come to the Stock Exchange.

There is hardly a man or woman in this country whose standard of living does not depend on the ability of his or her employers to raise money to finance new development. In one way or another his new money must come from the savings of the country. The Stock Exchange exists to provide a channel through which these savings can reach those who need finance.

The money which enables these companies to go ahead with their projects is（）

A. exchanged for part ownership in the Stock Exchange

B. raised by the selling of shares in the companies

C. repaid to its original owners as soon as possible

D. invested in different companies in the Stock Exchange

橘皮的功效是（）

A．理气调中，燥湿化痰

B．破气除痞，化痰消积

C．疏肝理气，和中化痰

D．理气宽中，行气消胀

E．发表散寒，燥湿化痰

饭店开展客房预订业务，其任务可包括哪些？