白酒的香型是1963年第三届全国评酒会开始确定的。

制度化管理是由（）提出来的。

A.泰勒

B.亨利法约尔

C.罗伯特欧文

D.马克斯·韦伯

梨和香蕉的腐烂，是因为某些微生物将水果中的有机物分解成二氧化碳、水和无机盐，这说明微生物在生态系统中扮演的主要角色是（　　）

A．生产者

B．消费者

C．分解者

D．生产者和分解者

某办公楼共有三层，甲、乙、丙三公司分别拥有一、二、三层的所有权。丙公司未征得甲、乙公司的同意，将楼顶出租给某广告公司，由该广告公司在楼顶上树立了一块巨大的广告牌，租期1年，广告公司支付丙公司每年使用费5万元。关于丙公司的行为，以下表述正确的是：

A．丙公司有权将楼顶出租，租金归自己所有

B．丙公司有权将楼顶出租，但应分给甲、乙公司部分租金

C．丙公司未经甲、乙公司的同意，无权将楼顶出租

D．甲、乙、丙公司对办公楼是按份共有

新一届党组提出的工作总要求是什么？

Electronic mail has become an extremely important and popular means of communication.
The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mail traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects.
The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mail and creates a risk that wanted electronic mail messages, both commercial and noncommercial, will be lost, overlooked, or discarded amidst the larger volume of unwanted messages, thus reducing the reliability and usefulness of electronic mail to the recipient. Some commercial electronic mail contains material that many recipients may consider vulgar or pornographic in nature.
The growth in unsolicited commercial electronic mail imposes significant monetary costs on providers of Internet access services, businesses, and educational and nonprofit institutions that carry and receive such mail, as there is a finite volume of mail that such providers, businesses, and institutions can handle without further investment in infrastructure. Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mail.
Many senders of unsolicited commercial electronic mail purposefully include misleading information in the messages’ subject lines in order to induce the recipients to view the messages. While some senders of commercial electronic mail messages provide simple and reliable ways for recipients to reject (or "opt-out" of) receipt of commercial electronic mail from such senders in the future, other senders provide no such "opt-out" mechanism, or refuse to honor the requests of recipients not to receive electronic mail from such senders in the future, or both.
Many senders of bulk unsolicited commercial electronic mail use computer programs to gather large numbers of electronic mail addresses on an automated basis from Internet websites or online services where users must post their addresses in order to make full use of the website or service.
The problems associated with the rapid growth and abuse of unsolicited commercial electronic mail cannot be solved by the government alone. The development and adoption of technological approaches and the pursuit of cooperative efforts with other countries will be necessary as well.

"Pornographic" in Paragraph 3 probably means ______.

A. decent
B. instructional
C. sexual
D. commercial